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Tec engine.

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Re: Tec engine.

Postby Buckshot 1 » Sun Oct 19, 2014 9:14 am

bgsengine wrote:
Buckshot 1 wrote:
bgsengine wrote:Have to split the crankcase and pull piston out through crankcase where they have no head.

Engine HSK850-8330C

:) BSG< Thank you. After looking at the IPL, this engine must have a two piece crankshaft After pulling the sump, can I pull the crank with the flywheel attached? As I am going to replace the piston and rings? If so how do I get the rings compressed, so that I can install the piston back in the block. In the service manual for this engine it does not give you this information. The only information is their are two different syle rings. Thank you for your time. :usa:


It is easy dont even have to separate crank and rod - one piece crank, 2 piece rod. I recommend NOT disassembling rod if at all possible because the needle bearings are loose - it is a ROYAL PITA to get them all back in place. Pull the sump, crank should come out with rod and piston - the cylinder bore will have a taper to it on the bottom end to aid in pushing the piston/rings back in - Just use extreme care and make sure the rings are lined up with any locating pins in the piston grooves or you'll break them if you try to force piston in with new rings - Oil rings and piston, and with a little care and getting it just square, you should be able to push the piston and rings into the cylinder with a little effort and no need for a compressor (though you can compress rings with fingers to help them along)

:) BGS, Thank you, As soon as the new piston ass'y arrives, I will get on this project. Back in the day when, I did 2 cycle work, I went thru the loose needles. Your are rignt PITA. Have a good one and Thank you for your time. :usa:
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Re: Tec engine.

Postby Buckshot 1 » Sun Oct 19, 2014 9:22 am

Deere2me wrote:One piece crank, ONE PIECE ROD. Loose needles!
PULL the flywheel, whatswrongwithya?
Ya need to get ya a manual, whattayathink?
http://www.mymowerparts.com/pdf/Tecumseh-Service-and-Repair-Manuals/

:) Very interesting reply. I have the service manual for this engine and I did not go thru the manual far enough. After looking thru the manual farther, I realize that it is a one piece crank and a one piece rod. As I stated in my first post, I do not do 2 cycle work anymore, I am trying to help out a Buddy who is down on his luck. :usa:
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Re: Tec engine.

Postby bgsengine » Sun Oct 19, 2014 9:28 am

Yup I wasn't paying attention to what I was typing when I wrote 2-piece rod.. :) but in any case, if all you need is rings, you can probably pull crank,rod,piston as an assembly and not have to screw around with loose needles.. Or, you can "cheat" off the rod and wrap tape or rubber band around the needles to hold them in place while servicing rod/piston.
How poor are they who have not patience. What wound did ever heal, but by degrees? - Iago (Othello Act II, Scene 3)
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Re: Tec engine.

Postby Buckshot 1 » Sat Nov 01, 2014 3:38 pm

:) I am working on a HSK 850-8330C Tec. Finally recievced the piston ass'y. My question is the piston has an arrow on the top, nowhere in the service manual is it stated about an arrow on the piston. Before I put the ass'y back on the crank I need to know which way the arrow goes, to the pto side or the flywhheel side? The old piston ass,y had no such arrow. Any suggestions/ideas will be greatly appreciation. Thank you for your time. :usa:
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Re: Tec engine.

Postby bobodu » Sun Nov 02, 2014 5:24 am

The manual says the arrow points toward the valves......it's in the that paragraph " connecting rod".
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Re: Tec engine.

Postby KE4AVB » Sun Nov 02, 2014 6:11 am

Bob, Which manual are you looking in? I did a pdf word search on the HSK850 manual and no mention of "arrow" in it. And the search came nothing about positioning the the arrow toward the valves either.

Buckshot, You also can check for the following. Quoted from the manual> "The connecting rod has a pressed in steel bearing liner. Notice that the flange of the connecting rod liner faces the flywheel end of the crankshaft. On newer units the connecting rod flange is less noticeable and will require the cast in side of the piston pin retainer to face the PTO end of the crankshaft."

If you still feel uncomfortable which way it goes try asking your supplier as they may know. Let us know what you come up with so others here that run into same thing will know what to do.

The original Tecumseh engine company when out of business about the same time I was getting into the small engine repair business so my experience with them is very limited. I depend on the manuals I find and help from others on these engines.
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Re: Tec engine.

Postby bobodu » Sun Nov 02, 2014 6:32 am

"Give me a fast ship, for I intend to go into harm's way."
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Re: Tec engine.

Postby Buckshot 1 » Sun Nov 02, 2014 6:39 am

bobodu wrote:The manual says the arrow points toward the valves......it's in the that paragraph " connecting rod".

:) Bob, Thank you for the reply. This is a 2 cycle engine, in a Craftsman snow blower. :usa:
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Re: Tec engine.

Postby bobodu » Sun Nov 02, 2014 6:41 am

Oh Hell...just figured out it's a two stroke !!! Mea Culpa...
Just bought a Yamaha Tri Moto 3 wheeler yesterday for $180. This outta be interesting getting that to run.
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Re: Tec engine.

Postby KE4AVB » Sun Nov 02, 2014 7:50 am

bobodu wrote:3 to 11 hp 4 cycle manual...
You know...the one we all downloaded but can't find the link to now.... :oops:

I have been using K&T Parts House for several of my manufacture's manuals:
http://www.mymowerparts.com/pdf/
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