Questions tagged [small-engine]

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.

22 questions with no upvoted or accepted answers
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158 views

TO hone, or NOT to hone,,, That is the question

I have one of those motorized bikes. I got it as a gift and it was used. I went to torque the head bolts one day and found out the studs were glued in with that weld stuff(brand withheld), and one had ...
3
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0answers
6k views

Two stroke engine dies at full throttle

I've got a two stroke strimmer (new last summer). It starts fine and responds smoothly to the throttle but approaching full throttle it cuts out. I've tried changing the fuel for carefully measured ...
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2answers
762 views

White smoke from Husqvarna 128DJX trimmer

I'm working on a Husqvarna 128DJX for my dad that's smoking while under load. At idle, there is no visible smoke. At half throttle, you see white smoke, and at full throttle, you really see it. On top ...
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0answers
72 views

Do you need this lawnmower part and what does it do?

I have a craftsman riding lawnmower model 247.203744 I started it up and heard a sound that made a kind of plastic getting broken sound... which it was. There is a black disk inside the engine ...
2
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0answers
89 views

Weed Wacker Not Running Properly

I have a Remington weed wacker that is ~2 years old. It worked great for the first 2 or 3 months but then I could not get it to work properly. I have tried new gas, new plug, adjusting the idle on ...
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0answers
47 views

Lawnmower locked up, cannot turn shaft

Thank you for coming here. My dad recently picked up a Craftsman gcv 160 mower. When I unloaded it, I ran it for a while, then drained the oil. Remember, it worked when I got it. The oil was very ...
1
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1answer
37 views

Exhaust back-pressure Q on simple 2-stroke yard-equipment engines:

I am having trouble getting a precise answer- is back-pressure necessary on a little single-cylinder 40cc 2-stroke like a chainsaw or a blower? I ask because people frequently modify mufflers to ...
1
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1answer
41 views

My Coleman CT200U, has white smoke and what seems to be oil coming out of the exhaust ,

My Coleman CT200U, has white smoke and what seems to be oil coming out of the exhaust , would this be a piston ring issue ?
1
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0answers
38 views

What would cause a weed-eater to suddenly only run on partial choke?

As stated in question - was starting and running beautifully until this past usage. Same fuel I've been using and same storage method. Suddenly will only run on mid-choke. Even after using for 10 ...
1
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0answers
283 views

carburetor Leaking gas oil mix when fuel lines replaced

Disclaimer I know this is for a blower not an engine, but was not sure where exactly to pose the ? I'm trying to assemble the fuel lines for the Ryobi BP42 two cycle blower, someone else took it ...
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0answers
22 views

1987 skidoo elan carb issues

I am trying to figure out either what model carb I have (to purchase a rebuild kit) or spec settings on the fuel/air jets. Tried to start her up tonight, ran for a minute then got flooded. Anything ...
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0answers
20 views

Trimmer has suddenly stopped starting

It's a Poulan Pro P1500 trimmer. Carburettor was changed recently and has been cleaned. Fuel can be seen on the spark plug once it is removed. Inline spark plug tester shows that ignition coil is ...
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0answers
27 views

Four cycle engine with oil in gas. What should I do besides new spark plug?

Honda GC160 5.0 emits thick blue smoke. I used it several days when it came to a stop. Filled the tank with fresh (no mix) gas & it would not start. Bought & changed the old spark plug. After ...
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0answers
22 views

Oil viscosity question

I recently made the mistake of over-filling my ride on lawn mower/Briggs & Strattan motor. Damage to the motor is done now and it's blowing heaps of smoke and fowling the spark plug. Question: Can ...
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0answers
28 views

Engine/model information for lawnmower

I need a riding mower. I am low on dollars and my neighbour has a year-old John Deere that needs an engine. What do I need to know about the motor to search for one? Where do I search? And would it be ...
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0answers
42 views

Nitro R/C buggy starts then engine quits

I have a nitro remote-controlled nb16 buggy. When I put the glowstarter in the engine and start the engine and remove the glowstarter everything runs fine. However, once I press the accelerator on ...
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0answers
121 views

Carb adjustment on carb where L and H aren't marked

I'm working on a string trimmer currently whose adjustment screws are not labeled - or the labels have worn off with time. :) For reference, the carb is a Zama. It seems to me that there is a ...
0
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1answer
39 views

Will it ruin a blower's future-adjustments to do the 'H & L screw-hack'?

These 2-strokes have H & L adjustments on the carbs but often have limiters built in and commonly people just hack a line across them to adjust with a flat-head, I'm tempted to do this but, at the ...
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0answers
26 views

What is the exact name of this RC nitro engine specific carburator part?

I've a Traxxas Pro .15 engine with me. The rubber boot attached to "Throttle lever" on my carburetor is cracked (picture given below). The engine has been in storage for the last one year. Yesterday ...
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0answers
9 views

chainsaws&blowers: Any guides/instructions on installing DIY air pre-filters on units with weak OEM filters?

I really love the idea (in link below) of Echo's 'pre-filter' setup to ease/assist the actual/main air filter and would love to DIY something, am guessing a stiff-enough, heat tolerant mesh material ...
0
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1answer
801 views

50cc Scooter only runs when manually choking air intake

I bought a 50cc Yamaha Zuma off of craigslist, and it's had some aftermarket parts put on it (exhaust, 70cc big bore kit, new carb). I cleaned the carb and converted the throttle to a one cable set-up ...
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0answers
30 views

Honda GX620 Engine not running on LPG

Okay it's not a car, it's in a generator, but I couldn't find anywhere better to ask. I've got an GX620 Honda V-TWIN it runs fine on petrol but won't run on lpg, it's meant to be dual fuel. If I ...