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Similar Topics
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By Rschrem
Hi, my 2010 Hisun will crannk but comes to a stop and only clicks. It has new battery and solinoid. Battery connections all seem good. Any ideas what the problem is?
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By Chile
2018 Massimo MSU 700 EFI. I realize that this engine is essential the same as in all of the HISUN based Yamaha clones out there. I am in the process of performing a top end diagnosis/rebuild. I have an AMAZON top end rebuild kit on order in anticipation of this activity.
Question 1: When exploring the myriad of top end rebuild kits on the market for these units there are some cylinder assemblies that have "686 cm3" badging next to the cam cain tensioner boss. Others compatible with the unit do not have this badging. The existing cylinder assy does not have the 686 badging. I am assuming that this simply verifies that the cylinder assy is for a 686 cm3 engine which of course the stock 700 series HISUN engines are. Am I missing something here or is this just a manufacturer artifact? With or without the badging the application listings all indicate compatibility with the MSU 700 series engines.
Question 2: I have reviewed at minimum a dozen videos associated with this rebuild. To date I have not found one that deals with piston/cylinder clearance and/or ring gap verification. The advertised specifications for these various "top end rebuild kits" all indicate: Cylnider bore = 102mm and piston diameter=101.5mm. The math yields a .5mm (as in 1/2 mm) difference. That seems to be a very large piston/cylinder clearance. I realize I am referencing advertised specs rather than emperically measured values but the numbers have gotten my attention. I have referenced the FSM and found it to be somewhat confusing in this regard. Hopefully the experts on this forum can enlighten me as to where my observations are faulty here.
Any and all assistance is greatly appreciated .
Thank you all in advance,
Chile
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By Joe Breaux
Decided to do an oil change on the Massimo ...drained oil, screen was very clean even tho oil wasn't. Then went to remove old filter.. holy crap ..I tried every tool I have, could not budge it..Went to store and got one of the end cap type..fit nice and tight, put a 1/2 in drive ratchet on it..nope..not moving. Put a 18 on breaker bar o. It. The inside of the removal tool broke off!! Had to weld it back together. Put a pipe on the bar for more leverage. Finally broke it loose..
I have never seen a filter in my 55 yrs of working on engines so tight..And i was the one who put it on 2 yrs ago. JUST HAND TIGHT!
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By CaptainMorgan
I have a Bobcat 2200 Diesel (built by Club Car) with a 2-weight Team Primary Clutch I want to rebuild, possibly replace. The clutch has an annoying rattling sound at idle and appears the rollers and weights are worn and loose. When I opened it up, everything looks clean and in great shape. It's just that all the moving rollers and weights seem to have way too much play in them, possibly causing the noise. I've searched for clearance and torque specifications with no luck at all. The UTV has less than 500 hours on it. Any ideas?
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By Pick a name
The Axis 500 will not shift into low or reverse. I have high when it should be in low and all the other places it is reverse. The gears in the shift cover are fine and I shifted it when the cover was off and yet no change (so it can't be the shifting mechanism gears). I t has been difficult to get it into low for awhile. But now it is either high or reverse, no neutral either.
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