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gabu

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Posts posted by gabu

    '98 SZR 660 4SU won't start

    in Other troubleshooting

    Posted

    on the electrical side,

    the darter and ignition are subject to a set of switches  operated by : prop stand, clutch lever, Neutral. some Diodes are included (2 +1) in the circuit. The switches can be bypassed if you have the scheme and if you are prepared to work the related wiring(see: colours of wires)   or connectors.

    Now the fuel pump will  need enough crankshaft turns  to pump fuel up to the carbs .Its is operated by the successive pressure pulses in the inlet tract. So need a strong battery or the help of a car battery although there is not much space to connect to the usual m/c battery lugs.

    Cheers.

    Project ginger stepchild - SZR600

    in Projects

    Posted

    On 10/8/2021 at 11:52 PM, regcheeseman said:

    Ever wondered why you never see photos of an SZR left hand side? Hard to believe they have a good side but the right is it.

    The first thing I wanted to do with the bike was to lose the horrible oil tank, and having owned a Buell I wanted to copy their idea - sort of.

    The plan was to use the left frame spar to hold oil, the standard tank is around 2.5 litres so I had to equal that at least. The first problem is the standard frame has a load of holes in it and as it'll be naked there's a big ugly fitting on the side of the spar that needs to go as well. First job was to weld up the holes and fit a filler neck.

    IMG_20210526_122853_sml.jpg

    IMG_20210528_122901_sml.jpg197976090_sml.jpg

    I didn't get any pics of the left side spar but it was the same thing, loads of holes to fill.

    The spars oil capacity was tiny about 1.6 litres brimmed, so I added a large capped off pipe between the spars to add an extra 0.8 litres

    IMG_20210602_204900_sml.jpg

    This still wasn't ideal as the frame had to be brimmed just to get minimum capacity, so I did the obvious and opened up the joining pipe to use both spar and get the required capacity easily. After pressure testing with water at 10 psi (and welding up numerous pin holes)  I just had to add a fitting to get the oil feed and return attached.

    Next step relocate expansion tank/battery/ecu/relays etc to keep the bike looking as clean and minimalist as possible....

    hello

    I like the general idea of an integral oil  tank very Mucho. Don't know how thick the metal is though. the bike I just bought (in bits) has a cracked engine /frame lug (bottom left, aft) and the prop stand bracket is gone.

    I will have to subcontract the job. Any advice please on thicknesses, angle reinforcement. Thanks and merci bien.

    '98 SZR 660 4SU won't start

    in Other troubleshooting

    Posted

    On 6/25/2021 at 2:19 PM, Langkjaer said:

    My son and I, are in the process of  repairing an older Yamaha SZR 660.

    Last season it ran fine, right up to a point where it would not start. It was set aside, but now we're looking at it, to fix the issue.

    We found that the bike, was fitted with an unoriginal electric fuel pump, and some wiring/relay for this. This pump was deemed faulty, as it could not produce pressure.

    We ordered a new fuel pump, which is an vacuum operated one, like the original one. To this also a set of new fuel lines, and a new fuel cock.

    After the fitment for these parts, a new spark plug, removal of wiring for the electric fuel pump, and some repairing of other damaged electrical wires. The bike will still not start.

    It cranks just fine, and if we spray some start spray, into the carburetors. We can then from time to time, get it to run very shortly.

    Where do we go from here? All help is appriciated.

    hello,

    have just bought one in November 21 and hope to help.

    Your electrical circuit seem oK if you getit  to run a few short times. You have fuel flow to the carb with the vacuum pump I understand.

    So my advice is to dismantle the carb and clean it. They... sell gaskets and seals.

    But I have yet to discover the weird carb device details.

    bon courage à vous.

    New to Y-O-C

    in New Members Welcome Area

    Posted

    On 10/4/2021 at 8:42 PM, blackhat250 said:

    Welcome"  another Tank owner ,,[ fj ]  :welcome:

    hello BH 2.5,  I have just joined the Forum looking for a  " SZR 660" topic. I also like restoration of british machinery  in particular a certain long -lasting Velocette Venom  conversion.

    gabu (Georges ) from Normandy.

    SZR 660

    in Classics

    Posted

    HELLO ALL

    first a Happy New Year to you and people you care about. (and your bikes).

    I am a french-speaking newcomer on this Forum and I wish to join the SZR "buffs" or entusiasts. I bought a to-be-finished 1996 SZR in poor condition, and spares to complete it.

    Please indicate if such a topic exists.

     

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