I have this engine without start motor that I can hardly pull, is there some way to reduce the compression so an old man can start it? lol
Possibly. What is your model and spec number?
The engine has no data plate, but it came off a Sears 536-909400 snow thrower. I understand it's a 5hp from the net, and a Tecumseh point kit fit like a ducks foot in the mud. Hence I feel it's a Tecumseh? lol
Engine runs like a top, just harder to pull than the 6.5hp I put on the snow thrower.
I'm hoping to replace a like new Clinton on an old "Merry Tiller' with it, and save the Clinton just to have as I have Clinton ties.
Thanks for any help...
Look for a 143.xxxxxx number on the engine.
That's the Tecumseh prefix for "Sears" engines and can often be crossed for the specific Tec engine.
Your engine may have a compression release issue, which could be internal or from an excessive valve gap. Is there points in this? Could you be dealing with a timing issue? There were snow king engines based off both the small HS frame and medium H frame. Post a pic if you can't find the number. Of course, you will need to rig up an air box. Another option seeing as though this is a snow engine, maybe it has the provisions for an electric start.
I think needed carbon removed if hard to pull rope when builds up raise compression high hard to pull and brake rope.
OP - Gator Rider2 makes a good point about carbon buildup in that older Tecumseh 5HP engine cyl chamber.... such could make it much harder to crank with a rope pull start due to increased compression.
I have a 5 HP Tec on a chipper/shredder with a rope pull start and it does not pull hard.. starts/runs well.
Might be worth either running a special additive thru the fuel supply or pulling the head & giving the cyl/piston head a good scraping...
The carbon on piston makes sense as a snow blower engine most likely had choke always partly on in the cold? I'll check it out today Thanks for the hints, I'll post back what I find.
Removed .015 to .030 carbon from head and top of piston and now pulls and starts as it should, thanks for the tips! I would never thought of carbon build up, thanks again...
Please close this thread.
we learn from reach other, eh? But Gold Star goes to Gator Rider2 on this particular one... :)
Hope that old Tec gives you many more years of service.