Part Location Diagram of 870301002 Homelite SPARK PLUG
See part A-1 in the diagram
( Grid squares measure 1x1 inch )

SPARK PLUG 870301002

Manufactured by:
Homelite
ERP Number:
ERP18789582
Part Number:
870301002
Original Equipment Manufacturer ?
  Works with your model  BM4CSSAC!
In Stock
Delivers in 3-5 Business Days!

Easy 

15 - 30 mins 

(7 rated repairs) ?
  Works with your model   BM4CSSAC!

Frequently Purchased Together

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Troubleshooting

This part works with the following brands:
  • Ryobi
  • Homelite
This part works with the following products:
  • Trimmer
  • Leaf Blower / Vacuum
Part# 870301002 replaces these:
870301002,

Customer Part Reviews

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Average Rating (out of 5):
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Questions & Answers

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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.

Easy 

15 - 30 mins 

(7 rated repairs) ?
  • 1
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Motor increasingly harder to start. Gas leak

RALPH from GAINESVILLE, Florida

8 of 8 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers
Parts Used:
870301002, 310585012
Remove outer covers. Remove gas tank screws being careful not to lose the spacers remove 2 fuel lines ( note which line goes where }. I had ordered the gas tank and also the gas line and filter, but did not need the line and filter because the tank comes with the line installed, filter and cap. Install gas lines to original locations. R einstall gas tank making sure spacers are between tank and motor The spark plug is only visible after removing the heat shield which is also under the cover, remove plug check gap on new plug .025 and install. Install all covers.
Filled with gas pumped bulb 4X set choke pulled 2X started and ran like new
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Major Tune-Up

mike from kingman, Arizona

6 of 6 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers, Socket set, Wrench set
Parts Used:
901723001, 870301002, 310816006
It was time to perform a major tune-up on my 4-cycle trimmer. This included replacing the air filter and spark plug. Also, an oil change and gap check and inspection on the valve rockers.
The gas cap had leaked from the filtered-vent. Previous cleanings failed to correct this issue. the only remedy is to replace the fuel cap. < br />eReplacementParts.com is the perfect place to find OEM replacement parts.
Thank you!
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Unit would not run

John from Everett, Washington

3 of 3 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers
Parts Used:
870301002, 309375002, 900809009
1. Replaced carburetor
2. Replaced carburetor gasket
3. Replaced spark plug
4. Unit would not run, was getting no gas. After blowing in the fuel tubes, the feeder tube was plugged.( Should have done this first )
5. Removed the fuel tank, found the restrictor/filter corroded and plugged. Disassembled the restrictor , used safety wire to clear the passageway cleaned everything reassembled. Unit ran fine. ( There was no mention of this problem in the comments )
6. Adjusted the idle a little. Amazing!
7. The parts were not needed but, I left them on anyway.

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Choke arm broke off Air box base

Lee from Clearfield, Utah

3 of 3 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers
Parts Used:
870301002, 308398005
Replaced air box because of broken choke arm. Also replace fouled spark plug
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Will not stay on for to long

Ovidio from Fitchburg, Massachusetts

2 of 2 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers, Wrench set
Parts Used:
870301002, 521403001, 308398004
Replace the spark plug and change the air filter.
Runs much better
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4 cycle trimmer would start, but bog down on full throttle- leaked oil also

james from CLINTON, Maryland

1 person found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
30 - 60 mins
Tools:
Pliers, Screw drivers, Wrench (Adjustable)
Removed air filter housing, carburetor and fuel lines. I took the fuel tank off to clean dirt/debris off it. It was easier too, to replace fuel line and fuel return in tank. Carb, gasket, and spark plug were simply a take off and replace. Trimmer started on 3rd or 4th pull as the choke lever is hard to get used to. If you pump the pr imer like 8x, it will start cold. No carb adjustment needed. Apparently the O-ring on the oil dipstick was bad. I replaced both since cost was low.
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Primer broke

Lawrence from Tewksbury, Massachusetts

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
30 - 60 mins
Tools:
Screw drivers, Socket set
Parts Used:
870301002, 300780003, 901696001
Replaced primer, air filter and spark plug
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  • 1

Model Cross Reference

This part works with the following models:
ERP Number: ERP18789582
Manufacturer Part Number: 870301002
Brand Model Number Description
Homelite BM4CSSAC Trimmer - Bm4cssac 30cc 4-Cycle Straight Shaft String Trimmer Mfg. No. 090432502 8-11-20 (Rev:04)
Homelite BM4CSSACC Trimmer - Bm4cssacc 30cc 4-Cycle Straight Shaft String Trimmer Mfg. No. 090432504 8-11-20 (Rev:04)
Homelite BM4CSSACCVNM Trimmer - Bm4cssaccvnm String Trimmer Mfg. No. 095432553 7-6-20 (Rev:03)
Homelite BM4CSSACVNM Trimmer - Bm4cssacvnm 30cc 4-Cycle Straight Shaft String Trimmer Mfg. No. 095432502 8-11-20 (Rev:04)
Homelite BM4CSSACVNMC Trimmer - Bm4cssacvnmc 30cc 4-Cycle Straight Shaft String Trimmer Mfg. No. 095432554 8-11-20 (Rev:04)
Ryobi RY 4 CCS Trimmer - String Trimmer, 30cc, Rev 01
Ryobi RY 4 CSS Trimmer - String Trimmer, 30cc, Rev 01
Ryobi RY09440 Leaf Blower / Vacuum - Blower
Ryobi RY09460 Leaf Blower / Vacuum - 4 Cycle Handheld Blower
Ryobi RY09465 Leaf Blower / Vacuum - Blower/Vacuum
Ryobi RY09466 Leaf Blower / Vacuum - BLOWER
Ryobi RY09466A Leaf Blower / Vacuum - Blower
Ryobi RY13015 Trimmer - 30cc 4-Cycle Wheeled Trimmer
Ryobi RY13016 Trimmer - 4-Cycle Wheeled Trimmer
Ryobi RY34000 Trimmer - 4 Cycle Gas Powerhead
Ryobi RY34001 Trimmer - 4 Cycle Gas Powerhead Trimmer
Ryobi RY34005 Trimmer - 30cc Power Head
Ryobi RY34006 Trimmer - 30cc Power Head Trimmer
Ryobi RY34007 Trimmer - 30CC Power Head Trimmer
Ryobi RY34421 Trimmer - 4 Cycle Gas String Trimmer
Ryobi RY34422 Trimmer - 30cc String Trimmers
Ryobi RY34425 Trimmer - String Trimmer
Ryobi RY34426 Trimmer - 30cc String Trimmers
Ryobi RY34427 Trimmer - 30CC String Trimmer
Ryobi RY34440S430 Trimmer - Gas String Trimmer
Ryobi RY34441 Trimmer - 4 Cycle Gas String Trimmer
Ryobi RY34442 Trimmer - Gas Trimmer
Ryobi RY34445 Trimmer - String Trimmer
Ryobi RY34446 Trimmer - 30cc String Trimmers
Ryobi RY34447 Trimmer - 30CC String Trimmer