Zzr11 to cbr600fx
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ssray

Original Poster:

1,260 posts

246 months

Sunday 21st December 2025
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The zzr11 went and I got outbid on a few things, including a cbr900 street fighter that was previously crashed and went so far over what I thought it was worth it was silly.
Thought that around Xmas I'd bag a bargain....

The cbr had been advertised a while ago for 2k, the ads still up I found it on another add no MOT and had been down the road on one side,it was running rough but had been standing, I made a offer and collected it on the Monday.
I rode it home, it was horrible, rough running so no power, probably on two.
Mirrors which I hate and probably only 20psi max in each wheel.

Friday I took the carbs off, I loosened to outer two and they popped off, it took me the rest of the daylight hours to refit them including dropping a 10mm socket behind them and taking them off again.....

I bought some long reach screwdrivers and other bits, as there are slots in the frame to allow long screwdrivers to get to the carb rubbers, at one point I had two or three extensions to reach the bolts.

The screws for the floatbowls were very tight and even with jis screwdrivers it was touch and go, I've replaced them with stainless Allen head ones.

I took the main jets, emulsion tubes and the pilot jets out, into the ultrasonic cleaner, refitted and replaced some of the fuel hose and it has two fuel filters fitted, one in-between the tank and fuel pump and another in-between the pump and carbs, I replaced both.

New fuel, charged battery and it turns over but not even a cough, I could see the pump was working as the filters filled with fuel, still nothing and a dead battery.
Removed it, on charge and sulked

Next day armed with easy start (my last one rusted through)
First squirt and a cough...next squirt and we have life, after a minute or so I could leave the throttle alone, it took a few mins for the choke to be switched off.

Runs nicely, no nasty noises.

I had to replace brakes on the car so tried to start after that and once again we had Life.
I checked this morning and it still works.

Tomorrow it will be wire in the rubbish tiny indicators for the MOT which Will hopefully be Tuesday

carinaman

24,022 posts

193 months

Monday 22nd December 2025
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Dropping that socket sounds like fun. It's been down the road on the NS? That would've left the exhaust intact. Good luck for the MoT.

ssray

Original Poster:

1,260 posts

246 months

Wednesday
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MOT passed today, stupid indicators were a pain, had tiny led ones with a resistor inline, but still flashing far too fast.
Normal indicators fitted and still flashing far too fast, turns out they were 10w bulbs not 21w so I fitted a no load/led relay
Working straight away.

It's probably been on the track at some point, jacked up at the rear with a nitron shock fitted and the front end is pretty firm
I'll check the spring fitted to the shock and see what nitron suggest, a new spring is from £35-65 depending if you go nitron or just a correctly rated one from someone else.

It's a bit chilly to be outside too long currently, so that' will have to wait

Obison

191 posts

104 months

Wednesday
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Nice, it's pretty hard to kill a cbr600, they just want to keep going, once it's been in service for a bit it'll be very dependable indeed, only real weak spot is the camchain tensioner can get lazy but very easy to change.