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Ryobi CS30 (RY30021A) String Trimmer

Ryobi CS30 (RY30021A) String Trimmer Parts

Engine Assembly
Upper Shaft Assembly
Lower Shaft Assembly
Engine Assembly
 Fig #
A1
Short Block Assembly
 
No Longer Available [ More Info ]

Part Number: 984867001

Discontinued

Not Available

A2
Muffler Assembly
 
No Longer Available [ More Info ]

Part Number: 985869001

Discontinued

Not Available

A3
Muffler Gasket
 $3.99

Part Number: 900994006

In Stock, 4 Available

Ships within 1 business day
 $3.99
A4
Truss Head Screw
 
No Longer Available [ More Info ]

Part Number: PS03999

Discontinued

Not Available

A5
Carburetor Mounting Bolt
 $2.99

Part Number: 660346002

In Stock, 1 Available

Ships within 1 business day
 $2.99
A6
Intake Gasket
 $3.99

Part Number: 984762001

In Stock, 2 Available

Ships within 1 business day
 $3.99
A7
Heat Dam
 
No Longer Available [ More Info ]

Part Number: 518070001

Discontinued

Not Available

A8
Lock Nut Hx 10-24
 
No Longer Available [ More Info ]

Part Number: 81208

Discontinued

Not Available
Note: Torque Specs: 30-40 In/Lbs; 3.4-4.5 Nm

A9
Pan Head Screw 10-24 X 1.16
 
No Longer Available [ More Info ]

Part Number: 093221

Discontinued

Not Available

A10
Carburetor Gasket
 $3.99

Part Number: 9074002

In Stock, 9 Available

Ships within 1 business day
 $3.99
A11
Carburetor Gasket
 $1.99

Part Number: 900994004

In Stock, 25+ Available

Ships within 1 business day
 $1.99
A12
Gasket
 
No Longer Available [ More Info ]

Part Number: 5945603

Discontinued

Not Available

A13
Filter
 $3.99

Part Number: 98760

In Stock, 16 Available

Ships within 1 business day
 $3.99
A14
Box Air Filter Conehead
 $3.99

Part Number: 518094001

In Stock, 25+ Available

Ships within 1 business day
 $3.99
A15
Air Box Cover
 
No Longer Available [ More Info ]

Part Number: 518096001

Discontinued

Not Available

A16
Tubing
 $3.99

Part Number: 0143910

In Stock, 6 Available

Ships within 1 business day
 $3.99
A17
Inline Fuel Fitting
 $3.99

Part Number: 985304001

In Stock, 17 Available

Ships within 1 business day
 $3.99
A18
Carburetor Assembly
 
No Longer Available [ More Info ]

Part Number: 308054003

Discontinued

Not Available

A19
Gasket
 $1.99

Part Number: 900954001

In Stock, 11 Available

Ships within 1 business day
 $1.99
A20
Fuel Tank Assembly
 $14.51

Part Number: 308181004

In Stock, 25+ Available

Ships within 1 business day
 $14.51
A21
Fuel Cap
 $9.41

Part Number: 300758006

In Stock, 20 Available

Ships within 1 business day
 $9.41
A22
Bumper
 $1.99

Part Number: 98792

In Stock, 25+ Available

Ships within 1 business day
 $1.99
A23
Lead W/Terminals
 
No Longer Available [ More Info ]

Part Number: A06964

Discontinued

Not Available

A24
Lead
 $3.99

Part Number: A06963

Ships In 6 - 11 Business Days

Ships in 6 - 11 business days
 $3.99
A25
Screw (8-32 X 1 In. Torx Pan Hd.)
 $2.99

Part Number: 82540

Ships In 6 - 11 Business Days

Ships in 6 - 11 business days
Note: Torque Specs: 30-40 In/Lbs; 3.4-4.5 Nm
 $2.99
A26
Ignition Module (W/ 3 Sec.)
 $37.75

Part Number: 850080001

In Stock, 8 Available

Ships within 1 business day
 $37.75
A27
Spark Plug
 $7.82

Part Number: 870174001

In Stock, 25+ Available

Ships within 1 business day
 $7.82
A28
Screw (10-24 X 3/4 In. Pan Hd. Torx)
 $2.27

Part Number: 984812001

In Stock, 3 Available

Ships within 1 business day
 $2.27
A29
Clutch Plate (Sold Individually)
 
No Longer Available [ More Info ]

Part Number: 00242

Discontinued

Not Available

A30
Washer
 $3.99

Part Number: PS05268

In Stock, 5 Available

Ships within 1 business day
 $3.99
A31
Washer
 $1.99

Part Number: 638090001

In Stock, 19 Available

Ships within 1 business day
 $1.99
A32
Spacer
 
No Longer Available [ More Info ]

Part Number: PS05267

Discontinued

Not Available

A33
Drum And Connector
 $18.18

Part Number: 308177001

In Stock, 18 Available

Ships within 1 business day
Note: Torque Specs: 40-50 In/Lbs; 4.5-5.6 Nm
 $18.18
A34
Rotor W/Starter Pawl
 $27.26

Part Number: 300952002

In Stock, 16 Available

Ships within 1 business day
 $27.26
A35
Starter Pulley Assembly
 $16.05

Part Number: 308386001

In Stock, 22 Available

Ships within 1 business day
 $16.05
A36
Piston W/Pin
 
No Longer Available [ More Info ]

Part Number: 985872001

Discontinued

Not Available
Note: Includes Figure No. 54-58

A37
Spring and Container
 $4.28

Part Number: 638033001

In Stock, 25+ Available

Ships within 1 business day
 $4.28
A38
Heat Shield (Cat.)
 $3.99

Part Number: 984743001

Ships In 6 - 11 Business Days

Ships in 6 - 11 business days
 $3.99
A39
Rope-Starter
 
No Longer Available [ More Info ]

Part Number: 9789904

Discontinued

Not Available

A40
Starter Grip
 $1.99

Part Number: PS06114

In Stock, 17 Available

Ships within 1 business day
 $1.99
A41
Baffle
 $3.99

Part Number: 984837001

In Stock, 1 Available

Ships within 1 business day
 $3.99
A42
Screw-Thread Form (8-16 X 1/2")
 $2.99

Part Number: 82543

In Stock, 1 Available

Ships within 1 business day
Note: Torque Specs: 15-25 In/Lbs; 1.7-2.8 Nm
 $2.99
A43
Valve Disc
 $1.99

Part Number: 82-53-7

In Stock, 9 Available

Ships within 1 business day
 $1.99
A44
Rear Housing
 $11.30

Part Number: 984829001

Ships In 6 - 11 Business Days

Ships in 6 - 11 business days
 $11.30
A45
Screw (ST-155)
 $2.99

Part Number: 82538

In Stock, 6 Available

Ships within 1 business day
 $2.99
A46
Starter Housing W/Eyelet
 
No Longer Available [ More Info ]

Part Number: PA01641

Discontinued

Not Available

A47
Tank Insulation Gasket
 $3.99

Part Number: 900999002

In Stock, 6 Available

Ships within 1 business day
 $3.99
A48
Bumper
 $3.99

Part Number: 570549001

In Stock, 2 Available

Ships within 1 business day
 $3.99
A49
Screw (6-20 X .25 In. Tri-Lobular)
 
No Longer Available [ More Info ]

Part Number: 984759001

Discontinued

Not Available

A50
Outlet Tube (Exhaust)
 
No Longer Available [ More Info ]

Part Number: 985596001

Discontinued

Not Available

A51
Screen
 
No Longer Available [ More Info ]

Part Number: 984753001

Discontinued

Not Available

A52
Piston W/Pin
 
No Longer Available [ More Info ]

Part Number: 985872001

Discontinued

Not Available

A53
Piston Ring 30CC
 $2.99

Part Number: 690161005

In Stock, 22 Available

Ships within 1 business day
 $2.99
A54
Retaining Ring
 
No Longer Available [ More Info ]

Part Number: 65261

Discontinued

Not Available

A55
Piston Pin
 $1.99

Part Number: 00238A

Ships In 6 - 11 Business Days

Ships in 6 - 11 business days
 $1.99
A56
Connecting Rod Assembly
 
No Longer Available [ More Info ]

Part Number: PA00190

Discontinued

Not Available

A57
Complete Starter Assembly
 
No Longer Available [ More Info ]

Part Number: 985544001

Discontinued

Not Available

A58
Cylinder, 30CC
 $26.44

Part Number: 640841008

In Stock, 1 Available

Ships within 1 business day
 $26.44
A59
Cylinder Gasket
 $4.16

Part Number: 900953001

In Stock, 14 Available

Ships within 1 business day
 $4.16
A60
Screw (12-24 X 5/8 In.)
 $1.99

Part Number: PS02807

In Stock, 6 Available

Ships within 1 business day
 $1.99
Upper Shaft Assembly
 Fig #
B
Operator's Manual
 $3.99

Part Number: 983000401

Backorder: No ETA.

Backorder: No ETA.
 $3.99
B
Customer Sheet
 
No Longer Available [ More Info ]

Part Number: 983000462

Discontinued

Not Available

C1
Expand-It Label
 $1.99

Part Number: 985165001

Ships In 6 - 11 Business Days

Ships in 6 - 11 business days
 $1.99
C2
Warning Decal
 $1.99

Part Number: 984032002

Ships In 6 - 11 Business Days

Ships in 6 - 11 business days
 $1.99
C3
Curved Shaft Assembly
 
No Longer Available [ More Info ]

Part Number: 000998239

Discontinued

Not Available

C4
Grass Deflector Assembly
 $3.92

Part Number: T308744001

In Stock, 17 Available

Ships within 1 business day
 $3.92
C5
Fastener Parts Kit
 
No Longer Available [ More Info ]

Part Number: PA00249

Discontinued

Not Available

C6
Right Hand Thread Spool Retainer
 $19.45

Part Number: 308042002

In Stock, 25+ Available

Ships within 1 business day
 $19.45
C7
String Head Assembly
 
No Longer Available [ More Info ]

Part Number: 000998230

Discontinued

Not Available

C8
Timmer Head Spool With Line
 $5.43

Part Number: 308044002

In Stock, 25+ Available

Ships within 1 business day
 $5.43
C9
Housing and Eyelet
 
No Longer Available [ More Info ]

Part Number: 099068001005

Discontinued

Not Available

C10
Spring
 $3.99

Part Number: 06713

In Stock, 25+ Available

Ships within 1 business day
 $3.99
Lower Shaft Assembly
 Fig #
B1
Warning Decal
 $1.99

Part Number: 984032002

Ships In 6 - 11 Business Days

Ships in 6 - 11 business days
 $1.99
B2
Upper Boom And Cable Assembly (Fits Models CS 30 And SS 30)
 
No Longer Available [ More Info ]

Part Number: 000998353

Discontinued

Not Available

B3
Warning Decal (BC)
 $1.99

Part Number: 984102002

Ships In 6 - 11 Business Days

Ships in 6 - 11 business days
 $1.99
B4
Handle Assembly (W/Out Screws)
 
No Longer Available [ More Info ]

Part Number: 985382001

Discontinued

Not Available

B5
Screw (10-14 x 1 in.)
 $1.99

Part Number: 82589

In Stock, 1 Available

Ships within 1 business day
 $1.99
B6
Trigger Lock
 
No Longer Available [ More Info ]

Part Number: PS06258

Discontinued

Not Available

B7
Trigger
 $3.99

Part Number: PS06259

In Stock, 3 Available

Ships within 1 business day
 $3.99
B8
Spring
 $1.99

Part Number: UP03210

In Stock, 3 Available

Ships within 1 business day
 $1.99
B9
Compression Spring
 
No Longer Available [ More Info ]

Part Number: 678252001

Discontinued

Not Available

B10
Ring Guard
 $3.99

Part Number: 985835001

In Stock, 2 Available

Ships within 1 business day
 $3.99
B11
Shoulder Strap (BC)
 $14.80

Part Number: 308487001

In Stock, 5 Available

Ships within 1 business day
 $14.80
B12
Switch (Momentary Contact)
 
No Longer Available [ More Info ]

Part Number: PS02764

Discontinued

Not Available

B13
Lead Assembly
 $3.99

Part Number: PA00387

Ships In 6 - 11 Business Days

Ships in 6 - 11 business days
 $3.99
B14
Screw (ST-155)
 $2.99

Part Number: 82538

In Stock, 6 Available

Ships within 1 business day
 $2.99
B15
Throttle Cable 15"
 $4.59

Part Number: PS01177

In Stock, 7 Available

Ships within 1 business day
 $4.59
B16
Logo Plate
 $1.99

Part Number: 985157001

Ships In 6 - 11 Business Days

Ships in 6 - 11 business days
 $1.99
B17
Hanger Cap
 $1.99

Part Number: 099078001039

In Stock, 25+ Available

Ships within 1 business day
 $1.99
B18
"J" Handle And Grip (BC)
 $10.55

Part Number: A08130

In Stock, 2 Available

Ships within 1 business day
 $10.55
B19
Lock Washer (BC)
 $3.97

Part Number: 83009

Ships In 6 - 11 Business Days

Ships in 6 - 11 business days
 $3.97
B20
Screw-Hex Hd. (1/4-20 X 1 1/2")
 $3.99

Part Number: 82278

Ships In 6 - 11 Business Days

Ships in 6 - 11 business days
 $3.99
B21
Screw (BC)
 
No Longer Available [ More Info ]

Part Number: 82496

Discontinued

Not Available

B22
Handle Bar Clamp
 $2.99

Part Number: 099075001007

In Stock, 1 Available

Ships within 1 business day
Note: Quantity of 2 needed for whole clamp
 $2.99
B23
Washer (BC)
 $2.99

Part Number: 678013001

In Stock, 1 Available

Ships within 1 business day
 $2.99
B24
Hex Nut (BC)
 $2.99

Part Number: 81242

Ships In 6 - 11 Business Days

Ships in 6 - 11 business days
 $2.99
B25
Front Handle Assembly (CS30 And SS30)
 
No Longer Available [ More Info ]

Part Number: 308472001

Discontinued

Not Available

B26
Fastener Parts Kit
 
No Longer Available [ More Info ]

Part Number: PA00249

Discontinued

Not Available

B27
On/Off Label
 $1.99

Part Number: 984240001

In Stock, 4 Available

Ships within 1 business day
 $1.99
B28
Model Label (CS30)
 $1.99

Part Number: 985162001

In Stock, 1 Available

Ships within 1 business day
 $1.99
B29
Model Label (SS30)
 $1.99

Part Number: 985163001

Ships In 6 - 11 Business Days

Ships in 6 - 11 business days
 $1.99
B30
Model Label (BC30)
 
No Longer Available [ More Info ]

Part Number: 985164001

Discontinued

Not Available

B31
Decal, Primer
 $3.99

Part Number: 985595001

In Stock, 2 Available

Ships within 1 business day
 $3.99
B32
Choke Label
 
No Longer Available [ More Info ]

Part Number: 985593001

Discontinued

Not Available

B33
Starting Label
 $3.99

Part Number: 985592001

In Stock, 2 Available

Ships within 1 business day
 $3.99
Discuss  |  Repair Videos
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Important note:

There are a number of different Ryobi trimmers that use the CS30 designation. Please check your model number (beginning with RY) and be sure it corresponds with the model number shown on this breakdown. You can click the Versions tab at the top of this page to view other possible matches.

Trimmer Parts
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Line Trimmers 101

This article explains the basic types and features of line trimmers, and it also offers purchasing guidelines for line garden trimmers.

How to Remove a Trimmer Clutch

This video explains how to remove the clutch from most line and string trimmers. Tips are provided for removing tricky clutch drum screws.

Lawn and Garden Machines and Power Tools
Lawn and Garden Machines and Power Tools

This article lists the major categories of lawn and garden tools and machines, explaining the basic applications, types, and features of each.

Accessories
Accessories for the Ryobi CS30

Discussion
Discussion for the Ryobi CS30 (RY30021A) String Trimmer

Discussion is closed. To ask our experts a question about a part, use the Q&A feature on our product pages.
Question: Ryobi String Trimmer Pull Start ...

1309706

I have a fairly new Ryobi cs30 string trimmer. It worked fine last week, but today when I wanted to start it, the pull cord came all the way out and back in without resistance. I watched the video on how to replace the spring and figured I could do that. But in my case, the spring apparently is okay. So, what part is failing on my unit and is it easily fixable?

Terry
Hello 1309708 It sounds like the pawls in the starter that pop out and engage the flywheel are stuck or are broken. If they are, you are going to need another recoil unit. Pull the starter off the unit and flip it over. Pull the cord and look for the little pawls to pop out. If they pop out when you pull the cord, then there was something jamming them while it was on the machine or the engagement tabs on top of the flywheel are bad.
Thanks. As a non-small engine expert, I'll give this a look. The dismantle video looked like it was do-able for me to try. I doubt if it is cost effective to take in for repair. I'll check on part replacement costs too. I see at Fleet Farm, they have homelites on sale for $60, but I'd rather fix this for less, if possible. Let you know.....

Terry
Question: Spring

killhigh

if part is discontinued where do I find the spring?
WJA
Hello killhigh,

Since I don't know the size of the 984106001 Spring. The 537338801 Poulan Spring might be able to be used. It measures 2 inches long and about 3/4 inch wide.

-WJA
Question: Ryobi CS30 Primer

1201933

My primer has a slit in it. I can't seem to find the part number for replacement primer?

Ryobi CS30 weedeater

Thanks!
WJA
Hello 1201933,

The primer bulb that would fit the carburetor for your Ryobi CS30 Trimmer is part number 561635001. They are in stock and ready to ship to you.

-WJA
Thanks for the quick response!
Question: Starter Assembly

ediebb

the problem i am having with my cs30 is that the spring ( not part #41) pulled out of part #40 ( it had a straight part that comes up and through part #308374001 is bent and pulled out...I bent it back and reassembled only to have it bend and pull out again after 3 or 4 pulls) does this spring come already attatched to part #308374001 or do i have to order it seperate? and if so may i have the part number and cost so that I may order it with the starter pulley...i figure get both new ( as spring is prob weaker now that it has been bent a cople times) and solve the problem all at once. Thank you and I await your response.
WJA
Hello ediebb,

The part number 308374001 starter pulley does include the spring with it. Also we have prepared an article and video that I hope will help you with the problems you are having.
Here is the link to it.

How to Fix the Starter on a Ryobi Trimmer

Hope this helps,
-WJA
WJA
Hello ediebb,

The part number 308374001 starter pulley does include the spring with it. Also we have prepared an article and video that I hope will help you with the problems you are having.
Here is the link to it.

How to Fix the Starter on a Ryobi Trimmer

Hope this helps,
-WJA
Question: Ryobi Handle

ktm400xcw

I have a Ryobi BC30, model number RY30060B. The handle broke because of the poor design. When you press the trimmer on the ground to extend the string, it causes the handle to bend down. You then have to bend the handle back into the correct position. After doing this several times, the handle breaks. The handle should have been designed more like a triangle or rectangle, like other trimmers for more strength.

Therefore, my questions are: Would the front handle assembly (part number 308472001) for the CS30 and SS30 fit my trimmer? Would the CS30 and ss30 handle be stronger than the replacement handle?

Thanks
WJA
Hello ktm400xcw,

I've looked at all of the parts diagrams for the trimmers you have mentioned. It looks as if the CS30,SS30 and the BC30 all use the 308472001 front handle assembly.

-WJA
Question: Ryobi Wont Start

1080997

inherited a ryobi cs30. looks fairly unused. wont start.
cleaned and blew out carb (except did not remove adjustment screws) -looked very clean inside. drained and filled with new 50:1. filter clean, plug looks good-switched plugs-no affect. primer fills with no leaks and under pressure. fuel lines are good, primer stays really full and i suspect is recirculating right back into tank???, float needle lets gas in.

checked for grounding. how do you check for spark?
No gas in throttle, what could be keeping the carb from letting gas into the throttle?
Ryobis are junk not worth fixing.
WJA
Hello 1080997,

We have a couple of articles and videos that might just get your Ryobi going again. Here are the links to them.

How to Clean a 2 Cycle Engine Carburetor.

How to Tune-Up a 2 Cycle Engine.

Hope these will help,

-WJA
Question: Primer Bulb

CSmith6478

Does any gas get pumped into the cyclinder when you press the Primer Bulb to prime the engine? It appears to me that the gas is pumped through the carburtor and that it just returns to the tank, which will pressurize the tank so that gas will flow. I get no gas coming from any port when I have the carburator disconnected fromt the engine but still hooked to the gas lines.
No, the primer bulb ONLY pulls fresh gas into the carburetor while pushing OLD gas and AIR back into the fuel tank. It is actually a purge bulb.
The Primer Bulb does not pump gas into the carb or the cylindar. It is actually a purger which pulls the air out of the carb and the fuel replaces the air in the carb. If it does, then it's connected wrong. If it is an external bulb, the short nipple goes to the outlet of the carb and the long nipple returns to the tank.
If it is hook up right or the bulb is mounted on the carb, watch the flow of the fuel/air bubbles in the line which carries the excess fuel to the tank. If you see it moving back toward the carb then the snap-in primer or the mounted primer is defective. Instead of pulling the air out it's pushing it in which is contrary to the design.
Question: Ryobi Cs30 String Trimmer

paulrichmond

Where do I buy piston rings for this motor?? Pauls asking.
Many vendors have the rings. Try ebay also if you have an account on there or wish to start one.
Question: Carburetor

paulrichmond

are gaskets and/or overhaul kits available?
Yes, they are. Your exact carburetor application is the key. If you have the Ruiing carb without the choke lever instead of this Homelite carb, Zama carb parts fit it. One or two kits for it are on Ebay. There are also kits for the Homelite carb, but I can't tell if it is the Ruiing or Zama.
Question: Drive Shaft Problem

courtdubya

I see that people on here are having problems with the drive shaft not engaging. However, I have the opposite problem. As soon as the engine starts, the drive shaft is spinning. This poses an obvious safety issue. Please help!
You need to turn the Idle adjustment screw counterclockwise to slow down the Idle speed of the engine.
Question: Trimmer

frank

The engine runs but the trimmer head doesn't spin. I know that the cable in trimmer is not broken.
Same problem here. Did you ever find out what was wrong? Tnx.
Have the same problem - was there any resolution here?
WJA
Hello frank,

Check your 308177001 drum and connector for damage, also look at your 00242 clutch plates to see if they are damaged or worn.

-WJA
Question: Idle Adjustment

Jim-FL

Can I adjust the low speed idle on my CS30 trimmer? It will not idle. It stalls when I need it to idle.
Your carb has an Idle Adjustment screw. However, the setting of the screw may NOT be the problem. The carb may need new internal parts (they come in kit form) as ethanol and time wear them out.
Question: Ryobi Trimmer

Bob Rodriguez

I have a Ryobi CS30 Trimmer that starts up great but when I give it throttle it stalls and then dies out, any recommendations?
1. Running too lean
2. High speed jet clogged
You may need a new fuel pump diaphragm. These carbs develop different problems. There are 2 kits for these carbs. 1. Gasket and Diaphragm kit (cures most problems)
2. Complete Rebuild Kit (includes the G & D kit) and has other important parts to restore the carburetor
Question: Won

Stan

Was using my CS30 Ryobi when all of a sudden it stop running. I did notice that the spark plug was getting hot to touch. Also the spark plug is E3, and I think the cap maybe a little small. It would run than the spark plug wire would pop off. It stopped working with the original spark plug.
Heat Range is fairly important on these machines, but usually not critical. Try to reinstall the OEM sparkplug (a new one) at the proper gap.
Question: Timing

jerry

Getting gas !! Very nice spark !! Won't run? Sounds like the flywheel has moved on the crankshaft. What does a 30cc ? CS30 RX30000A engine have to keep the flywheel from getting out of time. Do you know the part number if there is such a part?
Thanks for any info...... Jerry
Hi Jerry,

The Flywheel has grooves milled into it that align with tabs on the crankshaft to hold the alignment for timing. I would have to suspect a carburetor issue. When an engine either won't start or does start but then dies while idling, 9 times out of 10 it is an issue with the carb.

The carburetor can become clogged by dirt or other debris. The dirt may get by a damaged or missing air filter. It can enter through a crack in the fuel lines. Some tools use a foam air filter. Over time the filter itself will breakdown and create debris that will enter the carb and clog it. It is a good idea to replace the air filter at least once a year. If fuel is left sitting in an unused trimmer for more than a couple of months the fuel will begin to breakdown and go bad. As the fuel breaks down it will start to become gel like as well as begin to coat the internal parts of the carburetor with a varnish. The gel and varnish will plug the carburetor so that fuel can no longer flow through it. To get your trimmer running again you will need to either rebuild or replace the carburetor. When you replace the carburetor it is always a good idea to also replace the air and fuel filters. This helps ensure that more debris won't clog the new carburetor.

There is not a rebuild kit offered for your carburetor so it will need to be replaced. The carburetor is part #308054003 and is available from http://www.ereplacementparts.com.

I hope this helps with your repair!

-Mark

@ Mark If the carb is a Zama or Walbro there is a repair kit for it. If it is a Ruiing carb, then the carb for a Zama with the similar body and style will fit it! Ask me how I know Mark!
Most machines have a key built into the flywheel. There is a small, very small chance, that the key is sheared. If the flywheel moves out of position but still spins with the shaft, it will give you spark but at the wrong time. If the key is built in and is sheared, then you need a new flywheel. There are a few that has a lock key that is not built in. If could have sheared or fallen out. Like I said this is unlikely but something to look at. Has the machine ever seized suddenly while you were using it and the problem built up since?
Question: Hard To Start

JayZ

I bought a RY 26500 in May and after several use, it would not start. I tried everything on the manual, but it still would not start. So frustrated.
Hi JayZ,

First verify that the fuel you are using is mixed with 2-cycle oil at the proper ratio as specified by the manufacture and that fuel is no more than three months old. If the gas is old replace it with new, fresh fuel.

The spark plug may be bad. Occasionally a plug will fail prematurely.

The trimmer may simply be flooded. When a 2-cycle engine becomes severely flooded the cylinder will need to be blown out with compressed air. Remove the spark plug. You will need a spray nozzle for your compressor that will fit snugly into the plug hole. Now blow air into the cylinder while slowly pulling the starter rope. The air will exit through the muffler and will blow out any gas remaining in the cylinder or exhaust.

If the trimmer won't start after this then I would suspect a bad ignition coil. You will need a spark tester to check for spark. If spark is not present then the coil is bad.

The spark plug is part #870174001. The ignition coil is part #850108002. Both parts are available from http://ereplacementparts.com.

I hope this helps with your repair!

-Mark
@ Mark If spark is not present....the cause MAY JUST be that the air gap between the magnets of the flywheel and the legs of the ignition coil module NEEDS to be adjusted, not necessarily replaced.
Three steps in this order. Compression, Spark and fuel. You say this machine is not a year old, why compression. Have you been using regular gasoline from the gas station. It's been proven that Ethanol can be damaging to a 2 cycle engine, especially the rings. Find someone who has a compression gauge and check it. You should have somewhere between 90 to 120 psi. Anything less than 60 psi is not good.
Spark. Like the others are saying there are numberous places the ignition system can go wrong. Spark plugs are not that expensive. Get a new one. If it still doesn't fire and you can't get ahold of a spark tester (Napa carries them), get the old one and bend the tip a l little, snap the boot on and lay it against the metal on the machine so that it is grounded. Pull the starter, you should get a nice blue spark or glow.
If you are getting good spark, the next step is fuel. Get some carb cleaner, spray some in the spark plug hole or in the throat of the carb. Pull start, if it pops then you know the carb or fuel line is the problem. Mix some Seafoam Engine Treatment with the fuel and keep trying to start by spraying carb cleaner through the carb throat. You may have to pull the carb and clean it. Ethanol can be damaging to the check valves, diaphram. Did you completely drain the fuel tank and ran the machine dry before you stored it for the winter? If not, the carb is gummed up. Get some Seafoam spray cleaner and flush out the carb after taking it apart or you can try and attach a fuel line to the in port on the carb and the other in Seafoam treatment and purge it through the system.
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