Craftman 5000 Watt Generator hard Starting when Hot

[jono252525]

Craftsman 5000 Watt Generator, hard Starting when Hot. Engine Tecumseh model HM100
Start in 2 pull when cold and Run Perfect even at 6500 watt ( Peak time) ,but if you stop it to refuel , it take about 10 pull before it start.
The Carburator is all clean and adjusted (ultrasonic) , the valve are good .008 intake .012 ex , new head gasket, Governor
adjusted, air filter clean, the spark plug look like new J17 LM.
I need your help.

 

[Forest#2]

Does it have the electric starter also??
Them 10 HP Tecumsehs are not user friendly to rope crank is why I ask.

 

[jono252525]

Does it have the electric starter also??
Them 10 HP Tecumsehs are not user friendly to rope crank is why I ask.

No

 

[Auto Doc's]

If it has a low oil switch at the bottom, on the side of the block, unplug it and see if it will start when hot. These switches were problematic on many engines.

 

[Forest#2]

Also replace the spark plug and gap it per specs. (and fresh fuel)

You can download a free Tecumseh L-head manual on-line also.

I've purposely converted those HH100 Tecumsehs to electric start due to hard cranking/starting with the pull rope after killing the engine in cold weather when they are really needed. I found the used parts for such at a reasonable price on flea bay. Most of those HH100's have the starter holes already drilled and tapped on the block.
I just used a 2 amp 120v battery charger that kept the battery charged when the generator was running and I did not have to add a charging system to the engine.

 

[jono252525]

If it has a low oil switch at the bottom, on the side of the block, unplug it and see if it will start when hot. These switches were problematic on many engines.

I did that but no difference

 

[jono252525]

Also replace the spark plug and gap it per specs. (and fresh fuel)

You can download a free Tecumseh L-head manual on-line also.

I've purposely converted those HH100 Tecumsehs to electric start due to hard cranking/starting with the pull rope after killing the engine in cold weather when they are really needed. I found the used parts for such at a reasonable price on flea bay. Most of those HH100's have the starter holes already drilled and tapped on the block.
I just used a 2 amp 120v battery charger that kept the battery charged when the generator was running and I did not have to add a charging system to the engine.

The fly weel dont have the gear

 

[jono252525]

Also replace the spark plug and gap it per specs. (and fresh fuel)

You can download a free Tecumseh L-head manual on-line also.

I've purposely converted those HH100 Tecumsehs to electric start due to hard cranking/starting with the pull rope after killing the engine in cold weather when they are really needed. I found the used parts for such at a reasonable price on flea bay. Most of those HH100's have the starter holes already drilled and tapped on the block.
I just used a 2 amp 120v battery charger that kept the battery charged when the generator was running and I did not have to add a charging system to the engine.

I have the manual but no answer for the problem I have and the Spark plug is new and at .030 gap but I wil try a other one.
By the way The part list is not showing a gasket for the muffler so I did not put one, could that help to add one?

 

[Auto Doc's]

Craftsman 5000 Watt Generator, hard Starting when Hot. Engine Tecumseh model HM100
Start in 2 pull when cold and Run Perfect even at 6500 watt ( Peak time) ,but if you stop it to refuel , it take about 10 pull before it start.
The Carburator is all clean and adjusted (ultrasonic) , the valve are good .008 intake .012 ex , new head gasket, Governor
adjusted, air filter clean, the spark plug look like new J17 LM.
I need your help.

I suspect the rings are worn or the oil is too light. Most of these early engines uses straight SAE30 engine oil.

Are you also trying to use the choke when starting hot. Some engines with a lot of wear need the choke even when hot.

 

[jono252525]

I suspect the rings are worn or the oil is too light. Most of these early engines uses straight SAE30 engine oil.

Are you also trying to use the choke when starting hot. Some engines with a lot of wear need the choke even when hot.

I try with and with out the choke. and The compression is good 70 psi because of decompression system and no smoke.
I will try new oil 10W30 I like Castrol brand. Ho, the Coil module is new also.