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Engines used in applications such as lawn mowers, go carts, chain saws, compressors, small pumps, generators, garden tractors, and string trimmers. Frequently hand (pull) started and without an electrical system beyond the spark plug. Technically there is an overlap with motorcycle / scooter engines, but for questions related to motor cycles or scooters those tags are preferred.

2 votes

Recommended maximum amount of time to allow a small engine to sit without being run

With a small engine, your best bet is to ensure it runs once a year, then as you need it during the season it'll be used. Bad/stale gas is the big killer of small engines (mainly the carb, but if the …
Pᴀᴜʟsᴛᴇʀ2's user avatar
2 votes
Accepted

Small Gas Engine Throttle

The way the small engine throttle works is by a spring and vane system. The spring pulls on the throttle to increase engine speed. The vane is there to catch the air flow coming off of the engine fan …
Pᴀᴜʟsᴛᴇʀ2's user avatar
1 vote

Briggs & Stratton 7.5 hp wood chipper loses power after an hour of runtime

I just had a wild thought. I wonder if the return spring on the throttle vane loses some of its holding power when it gets hot, then regains it when it gets cold? < scratching head > The throttle vane …
Pᴀᴜʟsᴛᴇʀ2's user avatar
2 votes

Electric motor replaced with Gas engine

First, you have to know how fast the engine is running. To do this, you use an optical tachometer. On your flywheel or whatever you can mark, place a light colored dash on it and point the optical tac …
Pᴀᴜʟsᴛᴇʀ2's user avatar
2 votes
Accepted

Power from magneto (for LED)

From what I can gather from different sources (including this Wikipedia article): A magneto is an electrical generator that uses permanent magnets to produce periodic pulses of alternating current. U …
Pᴀᴜʟsᴛᴇʀ2's user avatar
2 votes

Weed eater dies when idling or not at full throttle, but is near catching fire at full throttle

The problem is you're not getting enough fuel. When you run it wide open, it still isn't getting enough fuel so it is running in a lean state, which creates a LOT of heat, and thus your near-thermonuc …
Pᴀᴜʟsᴛᴇʀ2's user avatar
4 votes
Accepted

Float carburetor leaking gas

More than likely the float is saturated or non-existent, allowing the bowl to be over filled constantly (not stopping the flow of fuel into the carb). It could also be the needle valve not seating cor …
Pᴀᴜʟsᴛᴇʀ2's user avatar
0 votes

1996 40hp mariner magnum - no start

I'd recheck to ensure you have spark. If the plugs were dry, then you added fuel directly to the cylinders, it should have fired, if even for a short while. Considering how you said it shut off, the i …
Pᴀᴜʟsᴛᴇʀ2's user avatar
10 votes
Accepted

Why does my lawnmower air filter have a metal wire mesh?

The purpose of it is to support the paper element. If the paper element were to get wet or get too much junk in it, it would run the risk of getting sucked into the engine, which might cause damage .. …
Pᴀᴜʟsᴛᴇʀ2's user avatar
4 votes
Accepted

How to inspect and clean a small engine stored for year without oil cap?

I think the best you can do is change the oil. I think your engine is most likely a splash oiling system which does not have a real oil pump or filter (I couldn't find the model you have listed to mak …
Pᴀᴜʟsᴛᴇʀ2's user avatar
0 votes
Accepted

Throttle Linkage for Kohler Command 18 Engine in Cub Cadet 2186

This is what it appears to me ... First, you have the part numbered as "20", which is actually part 22. The grouped parts are 21 (spring), 22 (bushing), and 23 (throttle linkage). 22 should fit into …
Pᴀᴜʟsᴛᴇʀ2's user avatar
2 votes
Accepted

Briggs-Stratton Lawnmower motor losing power

This is a carburetor issue, most likely caused by ethanol gas. Ethanol laced gas reeks havoc upon small engines. The easiest fix for it is to purchase a new carburetor for it, due to paying the price …
Pᴀᴜʟsᴛᴇʀ2's user avatar
0 votes
Accepted

Which engine does a 2005 Kymco People 50 have?

This web site gives these specifications for the motor: Bore (in) 1.54 Bore (mm) 39 Compression Ratio 7.21 Cooling Air Cylinders 1 …
Pᴀᴜʟsᴛᴇʀ2's user avatar
3 votes
Accepted

Carburetor question, attempting snowblower repair

Your best bet is to get a replacement carb. Some have had good luck rebuilding them, but for the trouble of it, it's just a lot easier to buy a new one off the internet. Personally, I can never get th …
Pᴀᴜʟsᴛᴇʀ2's user avatar
3 votes

Craftsman 42" snowblower pulley removal part 47026

It looks to me as though the main screw and washer comes off from the shaft, then you can just pull it off. It is probably splined. If you apply a little PB Blaster on it and let it sit for a half hou …
Pᴀᴜʟsᴛᴇʀ2's user avatar

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