SuzukiSavage.com - Clunking from front pulley area

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Clunking from front pulley area (Read 70 times)

652cafe

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A sunny place for shady people
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Clunking from front pulley area
07/09/17 at 12:53:48

Hey guys, I notice when I roll my bike fwd in neutral it makes a clunking sound from the front pulley area, like maybe a half dozen clunks then nothing for a few feet then repeats. It is quiet when being rolled backwards!
I'm not completely sure, but I don't think it did this until a few weeks ago when I attempted to roll start my bike (unsuccessfully) about 3 or 4 times. Runs great and smooth other than that. Is this something I should be concerned about?

2007 S40/RYCA CS-1 15,000 miles, Verslavy CC Adjuster, Mobil 1 Racing 10w 40.
Horse power is good at the track. Torque is what makes riding on the street FUN !

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Tocsik Serious Thumper Offline the singularity Posts: 1163 Denver, CO Gender:	Re: Clunking from front pulley area Reply #1 - 07/09/17 at 13:07:52 Have you inspected the belt for any missing or broken teeth? That would be my first move, then check the pulley nut torque. Should be around 95 ft/lbs. Having the noise start after bump starting may be a bit concerning, but maybe just some damage to the belt. Other, more knowledgeable folks will surely chime in.
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652cafe YaBB Newbies Offline Posts: 19 A sunny place for shady people Gender:	Re: Clunking from front pulley area Reply #2 - 07/11/17 at 04:36:25 Thanks, no there are no missing teeth on the belt. I do think my belt might be a little too tight though after watching that instruction video. I can just about twist it to 90 degrees, but not easily with thumb and finger. I'll adjust and take another listen.
Back to top	2007 S40/RYCA CS-1 15,000 miles, Verslavy CC Adjuster, Mobil 1 Racing 10w 40. Horse power is good at the track. Torque is what makes riding on the street FUN ! IP Logged

Dave YaBB Moderator ModSquad Offline SuzukiSavage.com Rocks! Posts: 18101 Camp Springs, Kentucky Gender:	Re: Clunking from front pulley area Reply #3 - 07/11/17 at 04:44:41 You really need to confirm the nut is tight on the pulley shaft. If that is loose and the pulley flops around - it can ruin the shaft. Repairing the shaft requires splitting the engine case, and most times it is easier for folks to buy a good used bottom end or engine.
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652cafe YaBB Newbies Offline Posts: 19 A sunny place for shady people Gender:	Re: Clunking from front pulley area Reply #4 - 07/11/17 at 12:41:23 oh wow...thanks Dave! I just loosened the belt (about 1 and a half turns on both sides and the clunking went away completely. Bikes rolls back and forth silently now! I will definitely check the nut on the pulley later though once the bike is cool. THANKS again.
Back to top	2007 S40/RYCA CS-1 15,000 miles, Verslavy CC Adjuster, Mobil 1 Racing 10w 40. Horse power is good at the track. Torque is what makes riding on the street FUN ! IP Logged

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