nylyon-(Admin) 8,134 #1 Posted August 23 Last week, the clutch return spring on my 416-8 broke. The pedal had been shaking while the engine is running, and the new spring makes this shake more pronounced. I thought I had replaced the belt and idler pulley a couple years ago, but not 100% certain and I don’t recall whether it was a toro belt. What do you guys think, replace the belt and pulley again, or do I have something else going on? Share this post Link to post Share on other sites
ri702bill 9,694 #2 Posted August 23 Inspect the belt to see if there are missing intermitent sections on the lower portion.... 1 Share this post Link to post Share on other sites
Ed Kennell 42,483 #3 Posted August 23 Maybe check the engine drive pulley for an obstruction. 2 Share this post Link to post Share on other sites
8ntruck 8,018 #4 Posted August 23 check the pulley on the transmission too. Take a peek at the pulley alignment between the engine and transmission, too. 2 1 Share this post Link to post Share on other sites
squonk 44,152 #5 Posted August 23 Just about every WH I ever owned had a shaky pedal. Didn't matter how new or what brand the belt was. I work on hundreds of belt drives every year. The number of them that don't have a little defection or bounce I can count on 1 finger. 1 Share this post Link to post Share on other sites
nylyon-(Admin) 8,134 #6 Posted August 23 Pulley’s looked okay, and I am sure if I replaced the idler pulley it would have been a Toro part. When I checked the belt, there is one part of the belt where it almost looks like a seam, definitely a bump there. I ordered a new belt, have to see if that works better. I am okay with a little movement, but this is excessive. 3 Share this post Link to post Share on other sites
953 nut 61,052 #7 Posted August 23 4 hours ago, squonk said: Just about every WH I ever owned had a shaky pedal. I would feel a bit shaky too if I saw your big foot coming my way. 1 2 Share this post Link to post Share on other sites
squonk 44,152 #8 Posted August 23 1 hour ago, 953 nut said: I would feel a bit shaky too if I saw your big foot coming my way. Remind me to tell you my Bigfoot story next year! 1 Share this post Link to post Share on other sites
Racinbob 12,045 #9 Posted August 24 (edited) I think you're on the right track replacing the belt with a Toro belt even if it looks good. I had the same issue when I purchased my 2005 Classic back in 2009. I'm blaming the lawyer approved clutch damper for it because it caused it to have a terrible 'feel' to the clutch engagement as well as pulsing it. Somehow the damper fell off but the clutch still pulsed quite a bit. I posted the issue here because the belt looked fine but a new belt was suggested. Put the new OEM belt on and everything was peachy. Edited August 24 by Racinbob 2 Share this post Link to post Share on other sites
peter lena 9,348 #10 Posted August 24 @nylyon , would suggest going over ENTIRE LINKAGE SET UP FOR MOVEMENT EASE , also verify spring pull / assist on swing areas , personally like a penetrating oil first , than follow up with a RED AEROSOL GREASE / TUBE EXTENSION . regular thing to check out , every related aspect of problem , drag / stoppage movement spot . bearings are the worst issue on W/H , next is rust hold areas . pete Share this post Link to post Share on other sites
Lee1977 7,298 #11 Posted August 25 Most likely worn holes at the clutch idler frame. I have a 312-8 doing the same, can't get the roll pin out to fix it. I did fix my C-120 by drilling out the holes and adding 1/2" ID x 5/8" OD bushing. 2 1 Share this post Link to post Share on other sites
peter lena 9,348 #12 Posted August 25 @ nylon , almost sounds like an incremental bearing hang up to me , possible idler pulley ? tensioner failing ? pete Share this post Link to post Share on other sites
nylyon-(Admin) 8,134 #13 Posted August 25 Going to swap out the belt first, if that doesn’t fix it I will start tearing it down more. 1 Share this post Link to post Share on other sites
nylyon-(Admin) 8,134 #14 Posted September 3 Put the new belt on this morning, very little movement now, much more acceptable. More importantly, the clutch engages way smoother. 2 2 Share this post Link to post Share on other sites
peter lena 9,348 #15 Posted September 3 @nylyon , glad you made a gain , usually find a related belt issue to rotational drag , even the slightest drag causes bounce , and related , issues , remember its not one part , its every part . @Lee1977 have experimented with that bronze bush area , like the SUPER LUBE , HYDRAULIC OIL / PASTE . areas used are smooth / quiet / seamless . thats also very good on heim joint swivel , ball . temp range on super lube , is extreme , both ways , have that in all my cabling areas , with a spring assist , to pull it closed ? that way a spring always assists movement . always experiment with INTENDED FUNCTION , amazing what you can find , to make things easy , reliable , pete Share this post Link to post Share on other sites
