adw
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Everything posted by adw
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Bet it does wonders for the vibration levels.
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Engines plus in Gloucester were the importer for those engines.
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So back to the leaking oil, the quickest way to see where this is coming from is, remove the bar and chain, drain the oil tank, refill with fuel, due to the reduced viscosity you will soon see where the fuel is coming from, most probably where the pick up pipe seals to the pump, or where the delivery pipe sits on the other side of the pump.
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You can lead a horse to water!
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I am sure i have taken those pins out, you can buy the return springs.
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Please please, do NOT run the saw without the bar and chain fitted, the clutch can, and will come off on the over run, once off, the the spider, shoes and spring will fly apart at speed and can cause serious injury if it hits somebody.
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Just to add if you think this is vapour lock, get the heat out of them by cutting some windows out in the top cover, this always helps especially as the covers well enclose the cylinder, do it opposite side of the flywheel to allow air flow over the cylinder.
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Nothing else to add that spud hasn’t already said.
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I still want to know why it does not run, it could be something really simple, don’t just write it off, let’s get this thing running, it’s a challenge now.
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They finally did something about those awful caps then, many a pair of chainsaw trousers plastered in chain oil.
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I hear what you say about the plug being dry, however these machines are very prone to ignition unit failures. Other things to check, purge pipes connected up correctly ( short pipe on the purge bulb is suction so goes to the carb, the longer tube on the purge bulb is pressure so goes back to tank ) next check the twin induction pipe, this also incorporates the impulse pipe, check this has not collapsed and is blocked, next lack of compression due to the ring being carboned into the piston, finally spark arrestor blocked.
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That is the same as the Husqvarna 435,so remove the red stop switch, remove both purge bulb pipes, press the bayonet sides in of the purge bulb in and pop it out, to remove the throttle rod you need to press and lift up the small plastic bracket the rod slides through ( hard to describe it, but it just lifts up to release the rod ) remove the three screws holding the carb, unhook the filter housing from the securing rubber, remove the carb with the throttle rod still attaced to it.
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These are fairly simple, so the wire from the generator goes to the white plastic housing on the crankcase, here it connects with a self tapping screw to one of the wires from the top handle, the other wire from the top handle then goes to one side of the rear handle heating element, the elements join together via the fixing screws, there is then a short wire from the other rear handle element to the switch, the switch is earned to the crankcase wit a self tapping screw.
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45cc clamshell engine aimed at the farmer market, bigger brother of the 40, Jonsered did a 50cc version, 145psi is reasonable, if as you say it starts, runs, and idles ok why are you worried about it? Might be interesting to see some pictures of the piston through the open exhaust port.
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Back to basics, has the pump shaft got a throw? ( reciprocate ) when you rotate the shaft it should move in and out to create a throw, no throw no oil!
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Not a Stihl lover but the ones I have seen have the crank so badly worn the sprocket drum recess comes away from the pump actuating arm so does not turn it, so no oil.
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Spring
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More.
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So let’s try again.
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It’s not a problem, I just want to see the finished product, always had a soft spot for Jonsered/ Jonsereds.
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I will check tomorrow, it’s been in and out of the saw like a fiddlers elbow, I will take a pic of the spring as well.
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As Spud said, order a new air filter and try it again if it’s the orange frame filter, if not fuel tank breather? fuel filter in the tank dirty? and finally main bearing cage breaking up and torn the crank seal, check the spark arrestor to see if there is some strange melted stuff in it, what ever you find I would get this checked out if you can find somebody capable to diagnose it.
