Troy-Bilt Horse engine swap

fwickliffe · Apr 9, 2013

As long as the engine is level and it runs out, you may have put a little too much in. I eliminated the throttle control and just use the engine mounted one.-fw

javapop · Apr 9, 2013

The only other issue I noticed was that my drive belt seems loose... can't seem to tighten. That may have been a issue before, well, this is a new "horse" so I hadn't used it much. The engine is smooth, and strong, love it!

javapop · Apr 9, 2013

I may end up moving the engine to my 81 model, I used that tiller for many many years! Kept the fluids full, the only thing MIA would be the switch to disengage the tines. That is kinda nice.

peterc38 · Apr 20, 2013

fwickliffe said:
Yes, I'm the original owner. On the tap size I simply bought a grade5 5/16-24 bolt at HD and used it instead of the 3/8 on the Tecumseh.-fw

Yep, thats what I did too.

fwickliffe · Apr 23, 2013

Has anyone had experience changing the small seal on the transmission eccentric at the rear of the tiller. It looks like you could drain the 90wt and pull the seal out with a pick and tap in the new one. I have the new one and its rubber with a spring seal.

aczlan · Apr 23, 2013

javapop said:
and the throttle control attachment of course is backwards. Reckon I don't really need that, how did you, or anyone else handle that?

They make throttle cables that go the other way (I bought one on accident once). I would get another cable that goes the right way.

Aaron Z

sixdogs · Apr 24, 2013

fwickliffe said:
Has anyone had experience changing the small seal on the transmission eccentric at the rear of the tiller. It looks like you could drain the 90wt and pull the seal out with a pick and tap in the new one. I have the new one and its rubber with a spring seal.

I've done this a couple times. Easy as pie and and it took an old screwdriver and a hammer.

fwickliffe · Apr 25, 2013

Thanks,

Travelover · Apr 25, 2013

I have that engine on a 3" water pump. This spring it would only run a few hits, then quit. Long story, short, the crappy "Torch" spark plug was the culprit. You might want to install an NGK BP6ES proactively. I just bought one for $2.88 on eBay including shipping.

cheeto · May 20, 2013

My predator is on the way, I have a thread going called should I replace the hh60. I finally had enough messing around with it. Looking forward to powerful tilling soon. Should be completed over holiday weekend.

Randy123 · May 25, 2013

All horse tillers have one belt you move the belt too change speeds on tiller

TomSeller · May 25, 2013

Randy123 said:
All horse tillers have one belt you move the belt too change speeds on tiller

Even the 1st models? There is another thread out there where I brought this up because I thought the same. Cheeto (the OP) indicated he had two belts installed at the same time.

cheeto · May 27, 2013

Yes, I have two belts installed. I dont see the purpose in it. I did do the predator swap. Besides a leaking tank, I am having a engine pulley problem. When I tighten my new pulley mounting bolt to the engine, it tightens the pulley to the base of the engine housing. It causes rubbing, and hard starts. Rope does not want to pull..... You maybe laughing but how in the heck do I secure the engine pulley without smashing it against the motor?

cheeto · May 27, 2013

Ok. I am sitting here thinking do I just need a longer pulley mounting bolt? One that allows the pulley to "wander" down the engine shaft.

bcp · May 27, 2013

There should be shims to adjust the pulley spacing from the engine. I just changed engines on mine and had to add some.

Parts 9 and 9A in this diagram:

Bruce

cheeto · May 30, 2013

Thanks got it shimmed correctly today.

Custom Parts · Jun 9, 2013

TomSeller said:
Even the 1st models? There is another thread out there where I brought this up because I thought the same. Cheeto (the OP) indicated he had two belts installed at the same time.

The Horse I tillers had two drive belts which are both installed at the same time. All Horse II and later tillers use one drive belt that is switched between the grooves to change the drive ratio. If both grooves on the pulley are the same size, you need two drive belts. If the pulley has stepped grooves (the outer groove is smaller than the inner groove), you have a one belt drive system.
Tim

TomSeller · Jun 9, 2013

Custom Parts said:
The Horse I tillers had two drive belts which are both installed at the same time. All Horse II and later tillers use one drive belt that is switched between the grooves to change the drive ratio. If both grooves on the pulley are the same size, you need two drive belts. If the pulley has stepped grooves (the outer groove is smaller than the inner groove), you have a one belt drive system.
Tim

Makes sense now.

jdboy4410 · Oct 28, 2013

I just ordered one from Harbor Freight,it's a 6.5HP Predator and the sku # was 69727,there was good reviews on that one,they sell another 6.5 but the reviews were mixed on that one.It should be here tomorrow and hopefully get it installed by the weekend.I will post the results.