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+--- Forum: FZS600 Fazer (https://foc-u.co.uk/mybb/forumdisplay.php?fid=78)
+--- Thread: Sensitive throttle (/showthread.php?tid=79744)
Sensitive throttle - sjca - 01-06-18
I have a 2001 FZS600 Fazer which has a sensitive throttle. Twice now I have done impromptu wheelies. I have checked the throttle adjustment and that's fine, just a midges play before it starts to rev. I wonder if the throttle springs are stretched ? It's putting me off riding it out of junctions etc. Any tips or help ?
Re: Sensitive throttle - slappy - 01-06-18
How much is a midges play, there should be 3mm free play at throttle.
Before you adjust the throttle it is best to balance the carbs and set your idle speed correctly.
Re: Sensitive throttle - BBROWN1664 - 01-06-18
(01-06-18, 01:07 PM)sjca link Wrote: I have a 2001 FZS600 Fazer which has a sensitive throttle. Twice now I have done impromptu wheelies. I have checked the throttle adjustment and that's fine, just a midges play before it starts to rev. I wonder if the throttle springs are stretched ? It's putting me off riding it out of junctions etc. Any tips or help ?
What size sprockets are on the bike?
How long have you been riding?
What have you ridden before the FZS600?
How much to you weigh?
All of the above will have a bearing on what answers I would give.
Re: Sensitive throttle - unfazed - 01-06-18
(01-06-18, 01:31 PM)BBROWN1664 link Wrote: [quote author=sjca link=topic=24218.msg280689#msg280689 date=1527854869]
I have a 2001 FZS600 Fazer which has a sensitive throttle. Twice now I have done impromptu wheelies. I have checked the throttle adjustment and that's fine, just a midges play before it starts to rev. I wonder if the throttle springs are stretched ? It's putting me off riding it out of junctions etc. Any tips or help ?
What size sprockets are on the bike?
How long have you been riding?
What have you ridden before the FZS600?
How much to you weigh?
All of the above will have a bearing on what answers I would give.
[/quote]
All the comments made by BBrown are very relevant
However if the bike is still on the standard rear shock turn the preload up full, if set to the lowest setting the rear sags to much and can cause the issue you describe.
Re: Sensitive throttle - daviee - 01-06-18
if your not used to a 4 cylinder then you will need to get used to how quick they rev , also if your cables need oiled they could be a bit jerky to operate
Re: Sensitive throttle - BBROWN1664 - 01-06-18
(01-06-18, 04:41 PM)unfazed link Wrote: All the comments made by BBrown are very relevant
However if the bike is still on the standard rear shock turn the preload up full, if set to the lowest setting the rear sags to much and can cause the issue you describe.
The answer about weight was heading towards that :pokefun
Re: Sensitive throttle - unfazed - 01-06-18
(01-06-18, 08:59 PM)BBROWN1664 link Wrote: [quote author=unfazed link=topic=24218.msg280692#msg280692 date=1527867673]
All the comments made by BBrown are very relevant
However if the bike is still on the standard rear shock turn the preload up full, if set to the lowest setting the rear sags to much and can cause the issue you describe.
The answer about weight was heading towards that :pokefun
[/quote]You were just hinting it and some lads just don't take hints :lol
Re: Sensitive throttle - sjca - 02-06-18
Thanks for the help guys. I've been riding for over 30 yrs, anything from a VFR750 to a Honda 250. In all my riding time I've never had such a sensitive throttle. This is my 1st Fazer, the bike is great apart from the throttle. Yes I am a big guy but have been most of my life, suspension is adjusted accordingly, it flies round corners beautifully and I can still scrape my boots on the tarmac. The throttle is not jerky, infact it's quite smooth but perhaps not as progressive as the VFR. I've just been and checked the throttle free play and its 4 mm. I have altered it to see if it makes any difference but it doesn't. Carbs were balanced last month and idle speed is around 1200 rpm. I've looked at the cables and you can turn the throttles by hand on the carbs, it's as though the springs are too slack. I've even tried riding without gloves, ( not recommended) other bikers at work have tried it and said they thought it too dangerous to ride although the MOT guy said it was sensitive but ok. I'm going to attach a spring to the throttle at the carbs to see if I can make it better, I'll let you know. Any other suggestions gratefully received.
Re: Sensitive throttle - His Dudeness - 02-06-18
Has it got a 1/4 turn throttle fitted?
Re: Sensitive throttle - Gnasher - 02-06-18
(02-06-18, 01:54 PM)His Dudeness link Wrote: Has it got a 1/4 turn throttle fitted?
:agree
Check the throttle handle bar casing, if the part the cables go into isn't white I'd say it's very likely it's a quick reaction throttle and a likely left over from the bike being a track day toy. It could also simply be that it's not set correctly, very common with pull/push throttles.
Re: Sensitive throttle - sjca - 03-06-18
Thanks guys, something to check especially the if its a quick reaction throttle. I'll let you know.
Re: Sensitive throttle - darrsi - 03-06-18
(03-06-18, 10:35 AM)sjca link Wrote: Thanks guys, something to check especially the if its a quick reaction throttle. I'll let you know.
Shouldn't really matter if it was, it would be something you'd still get used to after a short while.
Anything else we should know that might be a factor? :lol
Re: Sensitive throttle - sjca - 04-06-18
ok, so I had the carb cables off today and the throttles can be turned very easily until about quarter throttle when they go tight, I'm taking the carbs off to check the springs. Thanks, Steve
Re: Sensitive throttle - Gnasher - 04-06-18
Check the linkage where the cables join the carbs. This area often just get ignored and dust and debris collects on the linkage and stops it moving properly, quick clean with de-greaser oil some oil is often all that's required. While you there clean up all the other butterfly linkages in the same way you don't have to remove them to do this.