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Search found 418 matches

Author: Gray17
Mon Oct 13, 2025 11:16 am
Forum: Bike Help
Topic: Z900 A4 not running right on 2 cylinders
Replies: 15
Views: 667

Re: Z900 A4 not running right on 2 cylinders

Hi Guys, thanks for all the replies. So 1st off i disconnected both coils amd measured their resistance both were 4ohm. Next re checked all connections, again ok, then checked voltage at coils both had exactly the same at 12.5v however this rose to 13 8v once bike started. My friend then came round,...
Author: Gray17
Fri Oct 10, 2025 4:38 pm
Forum: Bike Help
Topic: Z900 A4 not running right on 2 cylinders
Replies: 15
Views: 667

Re: Z900 A4 not running right on 2 cylinders

Thanks for reply, the george mod was fitted on recomendation from a forum member a year or so ago now. Seemed like a good idea! However i have made it so it can be disconnected easily using the male and female bullet connectors. Yes i understand the circuits needed and will modify the existing wirin...
Author: Gray17
Thu Oct 09, 2025 8:27 pm
Forum: Bike Help
Topic: Z900 A4 not running right on 2 cylinders
Replies: 15
Views: 667

Re: Z900 A4 not running right on 2 cylinders

Thanks for replies. First off ill check the coils as suggested on ohms to compare between the 2, but if i swop over the coils then surely fault will swop to cylinders 1 and 4 and cylinders 2 and 3 should run ok Ill also check the ignition pickups again these can be swopped over as their identical. I...
Author: Gray17
Wed Oct 08, 2025 2:27 am
Forum: Bike Help
Topic: Z900 A4 not running right on 2 cylinders
Replies: 15
Views: 667

Re: Z900 A4 not running right on 2 cylinders

Appreciate the replies Guys In answer to question's yes its on electronic ignition, i did have a problem with the pick up magnet falling out but thats now resolved, ign timing is still spot on and the advance and retard free and working as it should. The bike also has the relay mod which ensures ful...
Author: Gray17
Tue Oct 07, 2025 9:11 am
Forum: Bike Help
Topic: Z900 A4 not running right on 2 cylinders
Replies: 15
Views: 667

Z900 A4 not running right on 2 cylinders

Morning Guys, its been a while, thats because i re stripped the kawasaki down again, replaced the cam chain as Rob recomended, had Carburettors stripped and ultrasonically cleaned all new genuine Mikuni internals, new rubber fuel lines (this was one of the issues, wrong rubber prev used), new clutch...
Author: Gray17
Wed Mar 19, 2025 1:55 pm
Forum: Bike Help
Topic: Z900 A4 Clutch
Replies: 5
Views: 1730

Re: Z900 A4 Clutch

Thanks for reply, yes soaked mine overnight too, re fitted all cases and filled with new oil and filter, also as prev stated new ball bearing and pushrid too so hoping thats made a big difference. Incidentallt i notice the 5mm difference in spring length, which are the original the 35mm or the 40mm?...
Author: Gray17
Wed Mar 12, 2025 1:56 pm
Forum: Bike Help
Topic: Z900 A4 Clutch
Replies: 5
Views: 1730

Re: Z900 A4 Clutch

Thanks for reply, will give them a soak overnight.
Cheers
Author: Gray17
Wed Mar 12, 2025 11:21 am
Forum: Bike Help
Topic: Z900 A4 Clutch
Replies: 5
Views: 1730

Z900 A4 Clutch

Morning Guys, yes i know its been a while, but to be honest its been so called in winter have neglected my baby( Z900) until now. So before the cold spell i was having trouble with my clutch sticking so bought all new clutch plates, springs, cable and push rod and ball bearing. I also fully drained ...
Author: Gray17
Sun Mar 09, 2025 10:48 am
Forum: Bike Help
Topic: wheel rim problem
Replies: 6
Views: 2613

Re: wheel rim problem

Just seen this post, i too live in East Yorks Hull, i bought a new rim for my Z900 A4 as the chrome on my other was very poor to say the least, have kept old Takasago rim though. Anyway i respoked the rear wheel a while back myself as again spokes were very rusty and pitted. I used Phillipes guide t...
Author: Gray17
Tue Nov 26, 2024 9:26 am
Forum: Bike Help
Topic: Z900 A4 sticking clutch
Replies: 51
Views: 15137

Re: Z900 A4 sticking clutch

Hi Guys thanks for replies, never even thought of that duh! Yes cable comes up through ears from left hand frame leg, but also tried on outside of ears up through tank edge too. I also tried with cable from clutch housing inside frame and outside frame no difference. However when i look at bars thin...
Author: Gray17
Mon Nov 25, 2024 2:23 pm
Forum: Bike Help
Topic: Z900 A4 sticking clutch
Replies: 51
Views: 15137

Re: Z900 A4 sticking clutch

Afternoon Guys not been at it for a while, too cold in garage even with fan heater on, perhaps im getting a wuss but def feel it more these days! Brrrh! Anyway all parts arrived, new ball bearing, new pushrod and new clutch all fitted, also fitted new clutch cable, the old one was wrong one and far ...
Author: Gray17
Fri Nov 22, 2024 2:13 pm
Forum: Bike Help
Topic: 1976 Z900 A4 Plug Thread
Replies: 15
Views: 3498

Re: 1976 Z900 A4 Plug Thread

A while ago now i stripped my Z900 A4 engine for full rebuild and vapour blasting, whilst everything was i bits decided the cylinder head needed some work, new valve guides, head skim and to assess minute cracks ( which forum advised was normal) etc. I also noticed that 1 of the plug threads had bee...
Author: Gray17
Thu Nov 07, 2024 5:43 pm
Forum: Bike Help
Topic: Z900 A4 sticking clutch
Replies: 51
Views: 15137

Re: Z900 A4 sticking clutch

Well if thats true theres no appreciable play in any of the plates to pins, youd expect with 1/2" difference you'd be able to feel it when you pull and push it on the links? Anyway regardless new ones in place now so problem sorted, least that side of it, time will tell on the remainder. Clutch...
Author: Gray17
Thu Nov 07, 2024 4:11 pm
Forum: Bike Help
Topic: Z900 A4 sticking clutch
Replies: 51
Views: 15137

Re: Z900 A4 sticking clutch

Yes thanks Rob i did remember, counted from next after mark, cant believe how much original chain had stretched. Realky surprised me! Measured both, new one nearly 1/2 " shorter then old one yet appeared to be no play in links themselves, so guessing extra is every part has stretched a small am...
Author: Gray17
Thu Nov 07, 2024 3:22 pm
Forum: Bike Help
Topic: Z900 A4 sticking clutch
Replies: 51
Views: 15137

Re: Z900 A4 sticking clutch

Afternoon Guys, thanks for all the comments they helped Friend made a solid steel plate 5" x 1" suitably drilled to match cylinder head cam cover holes, then bolted down tightly, this had 2 clamps 1 at either end to hold camchain tight against the plate so as not to move. Then the top link...

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