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Active Posts
Small Engine Forum
doug2500

Briggs 21 HP Single Cylinder. Bad rings?

Just got this Craftsman mower for free. Nothing is free.....Engine: Model 331877, Type 1371 B1, Code 100405ZDStarted right up after I cleaned the totally fouled plug.Burns oil blue smoke.Has 60 psi compression.But runs pretty well.Just wanted to get a second opinion that there's no way this is a val..
29
2025/07/07 19:14:06
Briggs & Stratton Forum
[email protected]

Need help on Briggs & Stratton 6.75 HP OHV engine electric diagram

Hi, I am wondering if anyone have, electric circuit diagram for Briggs & Stratton 6.75 HP OHV engine, I couldn't find anywhere I looked. This on a generator. I have no spark coming at spark plug, replaced the spark plug, on-off rocker switch and ignition coil, still no spark. I like to verify th..
9
2025/07/04 17:54:52
Stihl Forum
ueww40

Compression Release on FS111R Trimmer not working

Here is what I have done so far. Installed new cam gear and made sure timing is dead on according to manual. Compression release nipple on cam is moving freely in and out when pushed manually. Valve lash is 0.10 mm (using Stihl gauge and adjusted and checked when engine is cold). Engine starts immed..
16
2025/06/25 13:19:39
Briggs & Stratton Forum
cheltemes

Need a flywheel P/N cross reference (Briggs 21 hp Intek)

I need a new flywheel for a 21 hp Briggs model 331877 0869 G5. This is an Intek engine for a riding mower. The parts manual says the Flywheel is 698281. But, every website I search says that P/N 698281 is no longer available or discontinued. I have searched to find what P/N replaced this one, but no..
17
2025/06/18 07:30:47
Kawasaki Engine Forum
robsallee

FD851D Engine Map 1 and Map 2 switches

I am upgrading my '84 Scag Turf Tiger from a Kawasaki FD750D Carbureted engine to the fuel injected FD851D engine. I routed the return fuel line back into the tank, and I think I've worked out the wiring from the old harness to the plug on the new engine, but I can't find anyone anyplace to tell me ..
1
2025/06/17 17:02:02
Scag Forum
robsallee

FD851D Engine Map 1 and Map 2 switches

I am upgrading my '84 Scag Turf Tiger from a Kawasaki FD750D Carbureted engine to the fuel injected FD851D engine. I routed the return fuel line back into the tank, and I think I've worked out the wiring from the old harness to the plug on the new engine, but I can't find anyone anyplace to tell me ..
1
2025/06/17 13:35:53
Small Engine Forum
Jchaps20

The mounting bolts shrank- Briggs mower carburetor reinstallment

Hello! I worked on Briggs and Tecumseh but it was 30 years ago, so I'm lost. I bought a carburetor kit for a Troy-bilt LTX-1842 online. It has a Briggs 16.5 HP I/C engine (331877-0036 G1) It runs good and mows good but was running hot and the carburetor Was dropping fuel, so I bought a new..
20
2025/06/17 07:19:47
Generator Forum
ozzdownunder

Fuel Leak-Briggs & Stratton- GEN 850 Generator.

Hi, I have fuel leaking from a hole indicated by the attached picture, arrow in red is where the fuel is coming from...
1
2025/06/16 10:54:24
Lawn Mower Forum
Bob39

Help finding engine zone control cable

I am trying to locate the following: Engine Zone Control Cable #851664This is for a Sears Craftsman mower 4.0 HP 20" Cut.According to Sears, the part is no longer available and I have been unableto find it elsewhere. Is there an equivalent I can use? Can I just measureand find something with the sam..
6
2025/06/15 16:22:07
Small Engine Forum
David Miles

Briggs 22hp VTek problems

I have a john deere zero turn that I can’t figure out the problem.initially the problem was after about 20 minutes of mowing the mower would lose power sputter and eventually die. Sometimess run for another five minutes.I have replaced the fuel pump, carburetor, fuel filter and vent tube from the va..
3
2025/06/11 07:24:29

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