Part Location Diagram of 99909-159 Shindaiwa Gasket/diaphragm Kit
See part F-804 in the diagram
( Grid squares measure 1x1 inch )

Gasket/diaphragm Kit 99909-159

Manufactured by:
Shindaiwa
ERP Number:
ERP9313704
Part Number:
99909-159
Original Equipment Manufacturer ?
  Works with your model  HT231!
In Stock
Delivers in 3-5 Business Days!

A Bit Difficult 

30 - 60 mins 

(9 rated repairs) ?
  Works with your model   HT231!

Product Description

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This is a genuine Shindaiwa replacement part manufactured for outdoor power equipment. This kit is OEM, not an aftermarket imitation. The kit includes the diaphram, and gaskets between the air purge body, and carburetor body. It is recommended to replace the gaskets when reassembling the carburetor after a repair, the kit is sold individually.

Troubleshooting

This part works with the following brands:
  • Shindaiwa
This part works with the following products:
  • Trimmer
  • Hedge Trimmer

Customer Part Reviews

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Average Rating (out of 5):
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Customer Repair Instructions

All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.

A Bit Difficult 

30 - 60 mins 

(9 rated repairs) ?
  • 1
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Shindaiwa T22 Trimmer, will not start.

DANIEL from Mangilao, Guam

1 person found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
30 - 60 mins
Tools:
Pliers, Screw drivers, Socket set
First off, I am not a certified mechanic, I, am a small engine enthusiast, and my advise is given freely, from my personal experience of repairing my own equipment. I too, continue to learn more and accept advice, thank you, and here is mine..
1. Upon trouble-shooting diagnosis, suspicion was confirmed that there was a lack of compr ession to the unit.(55psi) note: you need at least a minimum of 70-75psi or better, for proper compression to start the unit. In some cases, it is still possible that 70psi \"may\", not be sufficient. If you, do not own or have a compression tester, you, may still be able to tell if you have a compression problem simply by just on pulling the starter rope, if it pulls too freely, and with little to no resistance, chances are that is the cause, but it is always best to use a compression tester.
2. Ordered all parts through ereplacement.com!
Replacement of any internal parts on small engines is not an easy task for those who are not familiar or mechanically inclined. But it can be done. Tip: before disassembling, it is not a bad idea to take several pictures, or video, during this process. Thank me later.
3. Remove spark plug, and housing.
4. Remove carburetor and associated components.
5. Remove muffler, and ignition coil.(before removal, and since the unit was an older model, I, optioned to spray penetrating oil, onto to all bolts, nuts, etc. before putting torque into them, nothing worse than adding stripped screws n bolts during the process, but sh__ happens.
6. Removed cylinder, evidence of heat discoloration, and scarring on exhaust port side, plus piston ring had forged with piston confirmed diagnose.
7. Inspected crank and piston rod, clean out all possible debris that may have fallen inside the cavity. Blast of compressed air works very well. Advise: my opinion, should you have to replace these parts as well, it is probably better off, to just buy a new unit.
8. Removed and replaced piston(and associated components) note: rubbed piston with 2cy oil to help with cylinder installation.
9. Carefully, slide new cylinder, onto the piston, with special attention not to damage piston ring.(the top of the piston has an arrow, make sure this is pointing to the exhaust side of the cylinder). Secure cylinder to casing.
10. Attach muffler(this would be a good time to inspect and clean the spark arrestor screen, over time, they clog from improper oil mixtures and will bog the unit preventing full power), attach ignition coil(with proper gap setting, use your manual, or a business card works great).
11. Reattach carburetor and components. Note: since the unit was not used for an extended period of time, it was my option to include a carb rebuild kit into the repair.
12. Rechecked unit with compression tester, 95psi! Reassembled housing, installed spark plug. Note: prior to connecting spark plug wire, and I\'m not sure whether it matters or not, but I, decided to pull the starter rope slowly(about 10 cranks), just to feel the compression and for the piston and cylinder to lube and bond.
13. Fresh gas added, and she ran like new.
Good day! I, hope this helped, and best of luck in your repairs.
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Carburetor diaphragm bad

Philip from CLEARWATER, Florida

1 person found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
30 - 60 mins
Tools:
Pliers, Screw drivers
Parts Used:
99909-159
Removed the carburetor and removed the diaphragm and replaced it and the gaskets. Runs great now.
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Carburetor dirty

Michael from West Simsbury, Connecticut

1 person found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers
Parts Used:
99909-159
I found the video on you tube that you have on cleaning two cycle carburetors. I was able to get my trimmer running like it was new again. Thank you
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older hedge trimmer, had been out of service for awhile. would start, but would not stay running.

Calvin from White Sulphur Springs, West Virginia

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
1- 2 hours
Tools:
Nutdriver, Screw drivers, Socket set
did a leak down test, found head gasket leaking. opened up crankcase, removed old gasket, old seals, cleaned parts, & installed new parts. rebuilt carburetor, installed new gas tank / fuel lines & filter. made minor adjustments. installed new gas, primed carb, two pulls on starter rope, ZOOM running fine!! thanks Replacement Parts!
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would not start.... bogging down the season before

tim from johnston, Rhode Island

0 of 1 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers
rebuilt carburetor with kit, changed fuel filter...28 year old weed eater runs like new! very powerful.... great step by step instructions on the video ...a monkey can do this job.... the website helped me out again... thanks
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Carb gaskets old and dry, same with primer bulb.

Dean from Marshall, Texas

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers
Parts Used:
A369000440, 99909-159
Removed carb and disambled. Sprayed parts with carb cleaner and put in new parts. put carb back on engine pumped primer and engine started right up.
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The engine was getting flooded the spark plug would be soaked with fuel .

Johnny from NASHVILLE, Tennessee

0 of 1 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers
Parts Used:
99909-159, A226000740
I removed the carburetor the two screws behind the air filter and two fuel lines also tilt the carb to disconnect the throttle cable .Put the fuel lines back in same location when you reassemble.I disassembled the carb the four screws that holds the prime bulb and discovered the fuel pump diaphragm was hard and brittle. The diaphragm was holding the needle open causing the engine to flood. I reassembled the carburetor installing a new Gasket/ Diaphragm Kit. The trimmer runs Great !
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Wouldn\'t run.

Richard from Alamo, California

0 of 1 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers
Parts Used:
99909-159
1. Remove Carb
2. Take apart
3. Clean, Scrape off any old gasket material.
4. Replace diaphragm and gaskets and remount carb.
5. Start and test
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Unit would not accelerate

Edwin from St.Marys, Georgia

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
30 - 60 mins
Tools:
Screw drivers
Parts Used:
99909-159
Removed carburator, disassembled and found two small holes in diaphram. Replaced diaphram and reassembled. Unit runs fine now.
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  • 1

Model Cross Reference

This part works with the following models:
ERP Number: ERP9313704
Manufacturer Part Number: 99909-159
Brand Model Number Description
Shindaiwa 22C Brush Cutter - Brushcutter
Shindaiwa 22DH Hedge Trimmer - Hedge Trimmer
Shindaiwa 22F Trimmer - Trimmer
Shindaiwa 22T Trimmer - Trimmer
Shindaiwa 61480 Trimmer - Trimmer
Shindaiwa 80192 Multi-Tool - Multipurpose Tool Carrier
Shindaiwa 80280 Multi-Tool - Multipurpose Tool Carrier
Shindaiwa AH230 Hedge Trimmer - Articulated Hedge Trimmer
Shindaiwa AH231 Hedge Trimmer - Articulated Hedge Trimmer
Shindaiwa C230 Brush Cutter - Brushcutter
Shindaiwa DH230 Hedge Trimmer - Hedge Trimmer
Shindaiwa DH231 Hedge Trimmer - Hedge Trimmer
Shindaiwa EB240 Leaf Blower / Vacuum - Backpack Blower
Shindaiwa EB240S Leaf Blower / Vacuum - Blower
Shindaiwa EB501 Leaf Blower / Vacuum - Blower
Shindaiwa F230 Trimmer - Trimmer
Shindaiwa HT20 Hedge Trimmer - Hedge Trimmer
Shindaiwa HT230 Hedge Trimmer - Hedge Trimmer
Shindaiwa HT231 Hedge Trimmer - Hedge Trimmer
Shindaiwa LE230 Edger - Lawn Edger
Shindaiwa LE231 Edger - Lawn Edger
Shindaiwa M230 Trimmer - Multipurpose Tool
Shindaiwa M231 Trimmer - Multipurpose Tool
Shindaiwa P230 Pole Saw - Pole Pruner
Shindaiwa P231 Pole Saw - Pole Pruner
Shindaiwa PB230 Power Broom - Power Broom
Shindaiwa T230 Trimmer - Gas Trimmer
Shindaiwa T230X Trimmer - Gas Trimmer
Shindaiwa TCX230 Trimmer - Trimmer
Shindaiwa X230 Trimmer - Trimmer