What's on your bench today?

[peatff]

16 hours ago, Macpherson said:

Not cheap either, I used to have a Dansette 😁

Luxury, we had one with black and white leatherette finish. Did you ever leave the arm up so it played the same record over and over. It used to drive our mum mad.

[Macpherson]

8 minutes ago, peatff said:

Luxury, we had one with black and white leatherette finish. Did you ever leave the arm up so it played the same record over and over. It used to drive our mum mad.

Mine was blue and cream, got it at a jumble sale.. had to balance a penny on it to stop it skipping👍 them were the days.

[spudulike]

7 hours ago, Macpherson said:

Mine was blue and cream, got it at a jumble sale.. had to balance a penny on it to stop it skipping👍 them were the days.

Funny that, there is a CD player skipping fix by placing a 10p coin on the magnetic floating boss on the Phillips CDM12 CD carriage. The thing is, the 10p is partially ferrous and fits perfectly in the magnetic recess!

[Macpherson]

8 minutes ago, spudulike said:

Funny that, there is a CD player skipping fix by placing a 10p coin on the magnetic floating boss on the Phillips CDM12 CD carriage. The thing is, the 10p is partially ferrous and fits perfectly in the magnetic recess!

Yep, a few years back I put a magnet in my pocket and was surprised to find that most of my change stuck to it.. I guess where there's muck there's no longer brass🙄

[spudulike]

Here is a tip for anyone running chainsaws and want to minimise downtime......Take off the fuel cap when the tank is near empty and inspect for small bits of chip and shyte of any type.

I used to do a lot of courier based work........on sending saws back, I drained any fuel from saws and always used a modified funnel with a very fine gauze in it and most saws left a lot of shyte in it so repeated the fill and empty process until the tank was clean.

This fine sawdust tends to break up, pass the fuel filter and end up in the gauze strainer so...if you want to have an easy life.....clean the dust off your fuel cap, keep your tank clean and make sure your fuel container is also clean.

I used a piece of stainless gauze stuffed in to the funnel with a ring of copper pipe....it works for me.

Easy enough to do a check and hopefully save you a few £££....had two today like this!

[openspaceman]

A question for the experts; I have a ms181 on my bench, it had a split purge bulb which I replaced expecting that to cure any trouble but now the saw starts and ticks over but fluffs out when the throttle is opened.  It successfully revs up if I put a finger over the stratification throttle body.All the signs of a low HI jet setting . I broke the limit cap trying to open the HI screw but this made no difference. I have opened the carb up and checked orifices and strainer and am about to put in a new, highly expensive,  Zama gasket and diaphragm set.

 

The one thing I did notice was that the purge bulb drew in some air and I am wondering if a restriction in the fuel supply could cause the purge bulb to suck air back out through the jets??

[peatff]

I had one do this and the problem seemed to be the metering. I raised the lever a bit and it was all good again.

[spudulike]

Sounds like lack of high speed fuel when you open the throttle. The metering arm suggestion would suggest this may solve the issue as should richening the H screw. Worth checking the fuel line, fuel filter, gauze strainer etc

[openspaceman]

14 hours ago, peatff said:

I had one do this and the problem seemed to be the metering. I raised the lever a bit and it was all good again.

How much is a bit, I thought normal was level with the base?

[openspaceman]

13 hours ago, spudulike said:

Sounds like lack of high speed fuel when you open the throttle.

That's right

13 hours ago, spudulike said:

 

The metering arm suggestion would suggest this may solve the issue as should richening the H screw.

As I said I broke the HI screw limit cap to open it a bit more but no difference. This Zama carb seems to have a fixed main jet and the HI screw then provides a bit additional fuel through an adjacent hole from the diaphragm chamber.

13 hours ago, spudulike said:

Worth checking the fuel line, fuel filter, gauze strainer etc

Yes all done and I shall fit a fresh fuel tank filter, even though the current one seems fine. I'm just wondering where the air is getting into the purge bulb from. Repeated pumping definitely pressurises the tank. I will have to check  bulb  housing for a leak too but why should an air leak here weaken the HI fueling?