timing Robin 295

sommerville · 05-16-2011, 02:19 PM

is it possible when replacing the timing belt to have the timing 180 deg out
even when lining up the marks

just replaced the timming belt
cleaned carb
adjusted valves
chainged oil
the cart runs but has no power

Thanks

roady89 · 05-16-2011, 02:56 PM

Did you pull the bolt out and the little "disk" off the bottom pulley to line up the keyway? Theres a mark on that washer/disk....thats not it. You gotta line the keyway up.

sommerville · 05-16-2011, 03:22 PM

yes pulled the disk lined up the key way to the mark
lined up the cam to the mark
adjusted the tensioner

she fired up but will not pull the cart

plugged exhaust ?

roady89 · 05-16-2011, 06:10 PM

Keyway straight up to mark, timing mark on cam pulley straight up to mark. I noticed when putting the belt on it was possible to get one tooth off if you just slip the belt on loosely then put the tensioner on. When I did it that way I noticed it was off by 1 tooth on the cam pulley. I put the tensioner back on then slipped the belt on.

If its timed right....carb might not be opening all the way....valve lash......I guess its possible the muffler is plugged up but have never seen it on a 4 stroke. I guess if you were ballsy you could pull the muffler and see if she pulls good without it.

crash12888 · 05-16-2011, 06:15 PM

Can you do a compression test?

roady89 · 05-16-2011, 06:27 PM

Quote:

Originally Posted by crash12888

Can you do a compression test?

Very true. Sometimes we forget the obvious.

I literately just did a 295 head swap this weekend. timing off one tooth or more, no compression, valve lash too tight (valves not closing) valve lash too loose(not opening) Carb not opening. Carb just plain messed up, air filter restricted.

Make sure the timing belt isn't too tight also. I followed the manual and it said 1/8 inch of deflection with 10lbs of force....I checked that to the best of my ability and ended up too tight. Tight enough it would make a whine noise while running.

sommerville · 05-16-2011, 06:47 PM

thanks for ideas
i'm heading to the shop now will see what happins !!!

scottyb · 05-16-2011, 07:00 PM

My Motor manual says 1/4 to 3/8th deflection with 10 pounds pressure? I have seen them running 2 and 3 teeth off but maybe they had more valve gap than yours? I thought I would add the pictograph for discussion purposes.

roady89 · 05-16-2011, 07:05 PM

Says 1/8 to 1/4 right there in the picture. i went with 1/8th...still too tight.

sommerville · 05-17-2011, 09:04 PM

Ok the answers to you replys
compression 175 both cly
new plugs
new coil old coil was bad weak spark
timmimg dead on
valves .004
removed the exhaust no change Noisy though
fule pump cleaned working fine the bowel is full

I still have no power. The cart will not pull a hill it runs but just will not GO !!
so i removed the carb again to clean it out and could not find anything pluged up.

time for a beer !!!

05-16-2011, 02:19 PM	#1
sommerville Not Yet Wild Join Date: May 2011 Posts: 8	timing Robin 295 is it possible when replacing the timing belt to have the timing 180 deg out even when lining up the marks just replaced the timming belt cleaned carb adjusted valves chainged oil the cart runs but has no power Thanks
sommerville Not Yet Wild Join Date: May 2011 Posts: 8

05-16-2011, 02:56 PM	#2
roady89 nimda Join Date: Jun 2007 Posts: 13,022	Re: timing Robin 295 Did you pull the bolt out and the little "disk" off the bottom pulley to line up the keyway? Theres a mark on that washer/disk....thats not it. You gotta line the keyway up.
roady89 nimda Join Date: Jun 2007 Posts: 13,022

05-16-2011, 03:22 PM	#3
sommerville Not Yet Wild Join Date: May 2011 Posts: 8	Re: timing Robin 295 yes pulled the disk lined up the key way to the mark lined up the cam to the mark adjusted the tensioner she fired up but will not pull the cart plugged exhaust ?
sommerville Not Yet Wild Join Date: May 2011 Posts: 8

05-16-2011, 06:10 PM	#4
roady89 nimda Join Date: Jun 2007 Posts: 13,022	Re: timing Robin 295 Keyway straight up to mark, timing mark on cam pulley straight up to mark. I noticed when putting the belt on it was possible to get one tooth off if you just slip the belt on loosely then put the tensioner on. When I did it that way I noticed it was off by 1 tooth on the cam pulley. I put the tensioner back on then slipped the belt on. If its timed right....carb might not be opening all the way....valve lash......I guess its possible the muffler is plugged up but have never seen it on a 4 stroke. I guess if you were ballsy you could pull the muffler and see if she pulls good without it.
roady89 nimda Join Date: Jun 2007 Posts: 13,022

05-16-2011, 06:15 PM	#5
crash12888 Gone Crazy Join Date: Jan 2007 Location: Chesterfield, Va Posts: 6,021	Re: timing Robin 295 Can you do a compression test?

Today
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05-16-2011, 06:47 PM	#7
sommerville Not Yet Wild Join Date: May 2011 Posts: 8	Re: timing Robin 295 thanks for ideas i'm heading to the shop now will see what happins !!!
sommerville Not Yet Wild Join Date: May 2011 Posts: 8

05-16-2011, 07:05 PM	#9
roady89 nimda Join Date: Jun 2007 Posts: 13,022	Re: timing Robin 295 Says 1/8 to 1/4 right there in the picture. i went with 1/8th...still too tight.
roady89 nimda Join Date: Jun 2007 Posts: 13,022

05-17-2011, 09:04 PM	#10
sommerville Not Yet Wild Join Date: May 2011 Posts: 8	Re: timing Robin 295 Ok the answers to you replys compression 175 both cly new plugs new coil old coil was bad weak spark timmimg dead on valves .004 removed the exhaust no change Noisy though fule pump cleaned working fine the bowel is full I still have no power. The cart will not pull a hill it runs but just will not GO !! so i removed the carb again to clean it out and could not find anything pluged up. time for a beer !!!
sommerville Not Yet Wild Join Date: May 2011 Posts: 8

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