96 Ezgo Robin's motor take off problems

trig123 · 07-30-2018, 08:55 PM

Maybe you can teach me something then. What was the purpose of the bottom gear having a mark on it ? There is a dot but nothing to align it with the best I could see.

I use the key way on the drive gear as the mark as described in the manual but I also make me another mark on an engine that I know is in time before I tear it down. . You need to disregard the gear tooth that is marked with the dot unless you do as I do.

If an engine is in time then I use a punch and make me a mark that is lined up with the gear tooth on bottom. The gear mark to nowhere I call it.

That way when I put things back together I can double make sure I am in time. Much faster for me doing it that way.

Blue mark is the one I make with punch and red mark is the one already on bottom gear. Always worked for me and I had did many.

Cartmaster · 07-31-2018, 01:54 AM

The mark on the bottom pulley as you say has no relevence, but by simply lining up the crank keyway and the top pulley with the mark the timing will be correct as long as you line up the belt under tension. Then two rotations of the crank and double check before tightening everything up. works for me! there is absolutely no need to make new timing marks.
But each to his own, whatever works for you.

Also marked are the cam and counterweight gears for correct alignment. This engine is so simple, my son was building them up when he was 10 years old and never got the timing wrong.

Why oh why did they ever stop using them. Luckily i have a huge stock of these rebuilt and ready to use in storage here in the UK.

trig123 · 07-31-2018, 07:11 AM

Just something I always did Cartmaster. Much easier for my bad eyes to see those two dots than the other way even though I look at both.

I agree that these engines are the best to ever be installed in an Ezgo. They are nice and quite and golfers loved them.
Then came the loud Caw-wa-sock-e :)

The Robbins that we had when I worked for a living made my job much better. We had 65 carts and all Ezgo with the 9 and 11 hp Robbins. Those engines were the strong part of the carts for sure.
One thing about being over 70 is I don't have to work for a living anymore. I was smart enough to save and invest all those working years. I figured one day I might get old. I am almost there . Now I just try and stay healthy so I can work on what I want. Cheers. Tom.

bulletsaltcreek · 08-15-2018, 06:11 PM

Ok, so compression all checked out at 175. New timing belt. We adjusted the valves before the timing belt, to tight. Fire in the plugs. Still no power... Anybody have any suggestions? Should we adjust the valves again after setting the timing? It still had the same syptoms. No power!
Thanks!

bulletsaltcreek · 08-15-2018, 06:13 PM

Default Re: 96 Ezgo Robin's motor take off problems
Ok, so compression all checked out at 175. New timing belt. We adjusted the valves before the timing belt, to tight. Fire in the plugs. Still no power... Anybody have any suggestions? Should we adjust the valves again after setting the timing? It still had the same syptoms. No power!
Thanks

bulletsaltcreek · 08-15-2018, 06:15 PM

Quote:

Originally Posted by trig123

What is the compression on the engine ?

Default Re: 96 Ezgo Robin's motor take off problems
Ok, so compression all checked out at 175. New timing belt. We adjusted the valves before the timing belt, to tight. Fire in the plugs. Still no power... Anybody have any suggestions? Should we adjust the valves again after setting the timing? It still had the same syptoms. No power!
Thanks

bulletsaltcreek · 08-15-2018, 08:55 PM

Quote:

Originally Posted by trig123

Should be the 1st thing you do when working on a Robbins :) engine.

I have seen many a dollar wasted trying to make an engine perform when the intake valves had sunk in head.

Check that compression

Default Re: 96 Ezgo Robin's motor take off problems
Ok, so compression all checked out at 175. New timing belt. We adjusted the valves before the timing belt, to tight. Fire in the plugs. Still no power... Anybody have any suggestions? Should we adjust the valves again after setting the timing? It still had the same syptoms. No power!
Thanks

trig123 · 08-15-2018, 09:09 PM

175 pounds compression ? You sure ?
Sounds like you got something plugged up in your exhaust. Check the exhaust ports in head. I have run into one cart all the years I worked at a golf course that had your same problem. High compression and no power. Sure enough there was not enough room for the exhaust to get out. Easy check.

Cartmaster · 08-20-2018, 03:57 AM

take the exhaust off and see if it has power!

Rayferd · 08-20-2018, 08:02 AM

I'm running into this very same issue at this very moment. new carb, good compression, and valves at .004 with no power. I can get it to run with choke in neutral but nothing else. Would that still be characteristic of a plugged exhaust?

07-30-2018, 08:55 PM	#11
trig123 Vintage tech Join Date: Sep 2009 Location: South Posts: 3,216	Re: 96 Ezgo Robin's motor take off problems Maybe you can teach me something then. What was the purpose of the bottom gear having a mark on it ? There is a dot but nothing to align it with the best I could see. I use the key way on the drive gear as the mark as described in the manual but I also make me another mark on an engine that I know is in time before I tear it down. . You need to disregard the gear tooth that is marked with the dot unless you do as I do. If an engine is in time then I use a punch and make me a mark that is lined up with the gear tooth on bottom. The gear mark to nowhere I call it. That way when I put things back together I can double make sure I am in time. Much faster for me doing it that way. Blue mark is the one I make with punch and red mark is the one already on bottom gear. Always worked for me and I had did many.

07-31-2018, 01:54 AM	#12
Cartmaster British born Nincompoop Join Date: Feb 2007 Location: United Kingdom Posts: 2,463	Re: 96 Ezgo Robin's motor take off problems The mark on the bottom pulley as you say has no relevence, but by simply lining up the crank keyway and the top pulley with the mark the timing will be correct as long as you line up the belt under tension. Then two rotations of the crank and double check before tightening everything up. works for me! there is absolutely no need to make new timing marks. But each to his own, whatever works for you. Also marked are the cam and counterweight gears for correct alignment. This engine is so simple, my son was building them up when he was 10 years old and never got the timing wrong. Why oh why did they ever stop using them. Luckily i have a huge stock of these rebuilt and ready to use in storage here in the UK.

07-31-2018, 07:11 AM	#13
trig123 Vintage tech Join Date: Sep 2009 Location: South Posts: 3,216	Re: 96 Ezgo Robin's motor take off problems Just something I always did Cartmaster. Much easier for my bad eyes to see those two dots than the other way even though I look at both. I agree that these engines are the best to ever be installed in an Ezgo. They are nice and quite and golfers loved them. Then came the loud Caw-wa-sock-e :) The Robbins that we had when I worked for a living made my job much better. We had 65 carts and all Ezgo with the 9 and 11 hp Robbins. Those engines were the strong part of the carts for sure. One thing about being over 70 is I don't have to work for a living anymore. I was smart enough to save and invest all those working years. I figured one day I might get old. I am almost there . Now I just try and stay healthy so I can work on what I want. Cheers. Tom.

08-15-2018, 06:11 PM	#14
bulletsaltcreek Not Yet Wild Join Date: Jul 2018 Posts: 7	Re: 96 Ezgo Robin's motor take off problems Ok, so compression all checked out at 175. New timing belt. We adjusted the valves before the timing belt, to tight. Fire in the plugs. Still no power... Anybody have any suggestions? Should we adjust the valves again after setting the timing? It still had the same syptoms. No power! Thanks!

08-15-2018, 06:13 PM	#15
bulletsaltcreek Not Yet Wild Join Date: Jul 2018 Posts: 7	Re: 96 Ezgo Robin's motor take off problems Default Re: 96 Ezgo Robin's motor take off problems Ok, so compression all checked out at 175. New timing belt. We adjusted the valves before the timing belt, to tight. Fire in the plugs. Still no power... Anybody have any suggestions? Should we adjust the valves again after setting the timing? It still had the same syptoms. No power! Thanks

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08-15-2018, 09:09 PM	#18
trig123 Vintage tech Join Date: Sep 2009 Location: South Posts: 3,216	Re: 96 Ezgo Robin's motor take off problems 175 pounds compression ? You sure ? Sounds like you got something plugged up in your exhaust. Check the exhaust ports in head. I have run into one cart all the years I worked at a golf course that had your same problem. High compression and no power. Sure enough there was not enough room for the exhaust to get out. Easy check.

08-20-2018, 03:57 AM	#19
Cartmaster British born Nincompoop Join Date: Feb 2007 Location: United Kingdom Posts: 2,463	Re: 96 Ezgo Robin's motor take off problems take the exhaust off and see if it has power!

08-20-2018, 08:02 AM	#20
Rayferd Getting Wild Join Date: Aug 2015 Posts: 81	Re: 96 Ezgo Robin's motor take off problems I'm running into this very same issue at this very moment. new carb, good compression, and valves at .004 with no power. I can get it to run with choke in neutral but nothing else. Would that still be characteristic of a plugged exhaust?
Rayferd Getting Wild Join Date: Aug 2015 Posts: 81

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