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Tecumseh H60 Timing/Tuning

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MSBiker

I keep hearing horror stories about timing the Tecumseh H60. I have one I was going to install new points, condenser and possibly a mag coil. Everyone says it takes many install and removal operations of the flywheel to get it timed! Are the flywheel/magnets not keyed to the crank?! Is this just pressed on with no key?

Does anyone have a good procedure for tuning and timing this engine after installing mag components? I haven't pulled one of these engines apart before so no clue what I need to do to get it right. Thanks.

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WHX??

The flywheel/magnets are keyed to the crank so no worries there. 

Set the points according to the manual and you shouldn't have any issue there. There should be a gauge on the points cover for gapping. 

I like to check for spark before torqueing the flywheel and putting tins on. 

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ri702bill

Are you replacing the coil?? IF you remove the adjustable mount, you will need to set the coil to magnet gap - BUT - it is inside the flywheel with no way to see it. Sooo, do not remove the mount!

 

This may help explain more....

 

 

Tecumseh Manual 3-10 HP.pdf

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ebinmaine
6 hours ago, MSBiker said:

Everyone says it takes many install and removal operations of the flywheel to get it timed!

 

This is the kind of garbage that keyboard warriors and rumor mongers have been spreading for 60 years. 

Follow the info posted above and you'll be fine.  

 

My added advice from personal experience: 

DO NOT use an incorrect tool for removing the flywheel from the  crankshaft. 

 

 

 

https://youtu.be/5XqMo3gUWJo?si=i4Z_prOgHg55TqmA

 

 

 

 

 

 

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MSBiker
13 hours ago, ebinmaine said:

 

This is the kind of garbage that keyboard warriors and rumor mongers have been spreading for 60 years. 

Follow the info posted above and you'll be fine.  

 

My added advice from personal experience: 

DO NOT use an incorrect tool for removing the flywheel from the  crankshaft. 

 

 

 

https://youtu.be/5XqMo3gUWJo?si=i4Z_prOgHg55TqmA

 

 

 

 

 

 

Correct tool for flywheel removal? I assumed (yeah I know) that light pressure on the flywheel and a light wack with a brass hammer would loosen it. Is there a specialized puller for this?

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ebinmaine
47 minutes ago, MSBiker said:

Correct tool for flywheel removal? I assumed (yeah I know) that light pressure on the flywheel and a light wack with a brass hammer would loosen it. Is there a specialized puller for this?

 

 

Check the manual above.  

I'm not sure if there's a "puller" 

 

I do know there are special tools for knocking the flywheel off via front smackage.  

 

 

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wallfish
2 hours ago, MSBiker said:

light pressure on the flywheel and a light wack with a brass hammer

That's how I took them off.

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Howie

The coil to magner cannot be changed on the Tecumseh. That is more or less a fixed 

dimension. The magneto bracket with the coil can be rotated but you cannot move it 

closer to the flywheel. 

The tool they sold to remove the flywheel was a piece of hex stock drilled and tapped

on one end, screw it  down close to flywheel and whack it! Carefully!  This prevented 

damaging threads on the crank. They are in my shop could get a picture later.

 

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RED-Z06
On 3/8/2024 at 8:41 PM, Howie said:

The coil to magner cannot be changed on the Tecumseh. That is more or less a fixed 

dimension. The magneto bracket with the coil can be rotated but you cannot move it 

closer to the flywheel. 

The tool they sold to remove the flywheel was a piece of hex stock drilled and tapped

on one end, screw it  down close to flywheel and whack it! Carefully!  This prevented 

damaging threads on the crank. They are in my shop could get a picture later.

 

Flywheel knockers, should still be able to buy them.

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MSBiker
57 minutes ago, RED-Z06 said:

Flywheel knockers, should still be able to buy them.

Thanks Red-Z60, 

Got the flywheel off the normal hillbilly way, slight pressure on the flywheel with screwdriver and wack the crank and nut with a brass hammer. Glad to know I done have to worry about the air gap.

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MSBiker

New, related topic: anyone have a good way to remove the oil seal so I can remove the clip behind it and pull the cover off? I have another oil seal on order because, I assume you have to destroy this one taking it off. No big deal,  just seems kinda backwards seal then clip...

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ebinmaine
31 minutes ago, MSBiker said:

New, related topic: anyone have a good way to remove the oil seal so I can remove the clip behind it and pull the cover off? I have another oil seal on order because, I assume you have to destroy this one taking it off. No big deal,  just seems kinda backwards seal then clip...

 

We're you able to download and peruse the manual from a few posts back?  Not sure if that info is in there...

 

Here's a couple other videos I'd saved:

 

 

 

 

 

 

 

 

 

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RED-Z06
40 minutes ago, MSBiker said:

New, related topic: anyone have a good way to remove the oil seal so I can remove the clip behind it and pull the cover off? I have another oil seal on order because, I assume you have to destroy this one taking it off. No big deal,  just seems kinda backwards seal then clip...

What clip?  Im assuming there is a snap ring over a bearing?

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MSBiker
10 minutes ago, ebinmaine said:

 

We're you able to download and peruse the manual from a few posts back?  Not sure if that info is in there...

 

Here's a couple other videos I'd saved:

 

 

The manual just says you have to remove it. Unfortunately both videos don't show how they removed the seal they just show it after it was removed. Thanks! I will do some more searching. 

 

 

 

 

 

 

 

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MSBiker
28 minutes ago, RED-Z06 said:

What clip?  Im assuming there is a snap ring over a bearing?

Yeah, the snap ring.

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RED-Z06
36 minutes ago, MSBiker said:

Yeah, the snap ring.

I just dont recall ever having to pull a snap ring on one.  What does it retain?

 

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RED-Z06
Posted (edited)
4 minutes ago, RED-Z06 said:

I just dont recall ever having to pull a snap ring on one.  What does it retain?

 

Thinking back, i usually just unbolted the cover, turned the bearing retainers, then pulled the cover off, if the ball bearing stayed on the crank, fine...if it stayed in the cover...also fine.  

Screenshot_20240314_190324_eBay.jpg

Screenshot_20240314_190308_eBay.jpg

Screenshot_20240314_190330_eBay.jpg

Edited by RED-Z06
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MSBiker

According to the book there is one behind the seal. The cover definitely won't come off easily.  So there must be a snap ring back thers.

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RED-Z06
14 minutes ago, MSBiker said:

According to the book there is one behind the seal. The cover definitely won't come off easily.  So there must be a snap ring back thers.

Pictures of the book?

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pfrederi

Part Manual for H60 HH60 Models 75117 and 75118 show only a seal

 

 

Tecumseh Manual 2.bmp

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RED-Z06

How did this end up

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