Planet Minis

muxster · 10-07-2008, 02:20 PM

I need a little help with cam tensioner on LiFan 140cc motor.
When I went to do an oil change last week I removed the small bolt under the motor that conceals a long spring with a piston looking piece. Apparently this is the auto cam tensioner or something.

Once the piston started to slide out a little I pushed it back up in place with the spring and capped the opening with the bolt. The large bolt I now realize is the drain plug. I'm not retarded like my AVATARD shows....LOL.

The motor is making a little knocking noise at idle and I believe it may be that tensioner? Does anyone have any info or diagrams of how that is supposed to be installed etc?

Thank you in advanced

Muxster

shw911 · 10-07-2008, 02:30 PM

This should go in the
Chinese/Import Minis - General Discussion
section.

muxster · 10-07-2008, 04:21 PM

Ok sorry

muxster · 10-08-2008, 09:45 AM

Anyone help with adjusting this Cam Tensioner?

I read the Clymer Manual and on some models it says to let the bike idle then loosen the bolt that holds the tensioner and spring and the let the adjuster adjust itself until the motor runs quieter. Then is says to tighten the bolt.
Does this sound correct?

When I went to loosen the bolt under the motor that holds the tensioner, oil started running out, so I tighten the bolt back up immediately. I did not loosen the oil drain plug.

Muxsyer

yellowrider · 10-09-2008, 11:04 PM

I dont think its your tensioner is your problem. By sliding it out and putting it back in should not affect anything. I would look elsewhere for your problem

90x2 · 10-10-2008, 12:48 AM

sounds like your valves are out of adjustment.set lash [gap] at .003 intake and .005 on exhaust. search youtube for adjusting valve lash on a honda 50.that should get you started.oh and make sure you are getting lots of oil to the valves just leave the top cover off and have a buddy kick it over while you watch for oil at the valve springs.

muxster · 10-10-2008, 09:17 AM

Thank you for the info. I will check the valves for sure. The motor does not have alot of hours on it since it was new so things loosen up. That makes sense.

Muxster

10-07-2008, 02:20 PM	#1 (permalink)
muxster 1st Gear Member Join Date: Sep 2008 Location: Redondo Beach, Ca. Posts: 101	Need help with Lifan 140cc Cam tensioner I need a little help with cam tensioner on LiFan 140cc motor. When I went to do an oil change last week I removed the small bolt under the motor that conceals a long spring with a piston looking piece. Apparently this is the auto cam tensioner or something. Once the piston started to slide out a little I pushed it back up in place with the spring and capped the opening with the bolt. The large bolt I now realize is the drain plug. I'm not retarded like my AVATARD shows....LOL. The motor is making a little knocking noise at idle and I believe it may be that tensioner? Does anyone have any info or diagrams of how that is supposed to be installed etc? Thank you in advanced Muxster

10-07-2008, 02:30 PM	#2 (permalink)
shw911 "Eating Ramen" Join Date: Feb 2007 Location: Los Angeles, CA Posts: 1,523	Re: Need help with Lifan 140cc Cam tensioner This should go in the Chinese/Import Minis - General Discussion section.

10-07-2008, 04:21 PM	#3 (permalink)
muxster 1st Gear Member Join Date: Sep 2008 Location: Redondo Beach, Ca. Posts: 101	Re: Need help with Lifan 140cc Cam tensioner Ok sorry

10-08-2008, 09:45 AM	#4 (permalink)
muxster 1st Gear Member Join Date: Sep 2008 Location: Redondo Beach, Ca. Posts: 101	Re: Need help with Lifan 140cc Cam tensioner Anyone help with adjusting this Cam Tensioner? I read the Clymer Manual and on some models it says to let the bike idle then loosen the bolt that holds the tensioner and spring and the let the adjuster adjust itself until the motor runs quieter. Then is says to tighten the bolt. Does this sound correct? When I went to loosen the bolt under the motor that holds the tensioner, oil started running out, so I tighten the bolt back up immediately. I did not loosen the oil drain plug. Muxsyer

10-09-2008, 11:04 PM	#5 (permalink)
yellowrider 1st Gear Member Join Date: Apr 2007 Location: Frozen in Time MN Posts: 235	Re: Need help with Lifan 140cc Cam tensioner I dont think its your tensioner is your problem. By sliding it out and putting it back in should not affect anything. I would look elsewhere for your problem

10-10-2008, 12:48 AM	#6 (permalink)
90x2 PM Newbie Join Date: Sep 2008 Location: mid west Posts: 23	Re: Need help with Lifan 140cc Cam tensioner sounds like your valves are out of adjustment.set lash [gap] at .003 intake and .005 on exhaust. search youtube for adjusting valve lash on a honda 50.that should get you started.oh and make sure you are getting lots of oil to the valves just leave the top cover off and have a buddy kick it over while you watch for oil at the valve springs.

10-10-2008, 09:17 AM	#7 (permalink)
muxster 1st Gear Member Join Date: Sep 2008 Location: Redondo Beach, Ca. Posts: 101	Re: Need help with Lifan 140cc Cam tensioner Thank you for the info. I will check the valves for sure. The motor does not have alot of hours on it since it was new so things loosen up. That makes sense. Muxster

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