Hi all,

I'm hoping someone can help.
I have a 2015 Viking MB253.1 T (STIHL RM253.1 T equivalent) and have replaced the genuine self-propel cable (6350 700 7528).

I'm stuck fitting the gearbox end. The cable passes through the black guide on the gearbox, but the Z-bend won't fit through the guide.

I've checked the STIHL parts diagrams, but they don't show how the cable actually attaches.
Does anyone know:

Is the black guide removable?
Does the gearbox need to be opened?
Or is there a particular fitting method?
I've attached a photo of the gearbox.

Many thanks for any advice!

Quote from: Changy on July 18, 2026, 01:44:00 PMI don't like using aftermarket carbs, so I ordered an original one. I fitted it, and the machine runs like a dream.

To be honest I never fit after market carbs on customers machines either, I've done it on my own stuff where I'd only have myself to blame if it didn't work out.  So you did the right thing.

Glad it's working ok now though. 
 

The tips hadn't broken off on either screw, but the carb wasn't interested in working. The owner didn't want to spend more money and said I could keep the machine. He paid me for my time.

I don't like using aftermarket carbs, so I ordered an original one. I fitted it, and the machine runs like a dream.

I will either sell it to one of my old clients or use it myself.

Hi Aldy, and welcome to TGMForum.

The bearings would normally be a push fit in each side of the wheels.  Then they would simply slide onto the stub axles and the nut tightened just enough to remove any play in the wheel.

I suspect your bearing are just stuck on the stubs and the stubs need a good clean up an deburr with a strip of emery cloth before trying to pull them off.  Once you get them off clean the shafts again where the stuck bearings sat.  Use a small two legged puller or a bearing separator to get the off if stuck.

Hi I am in the process of replacing the wheel bearings on an old Hayterette and on removing the wheels on both sides the inner bearings are held by the lip on the axle on the one side the bearing has free movement before hitting the lip. Trying to understand how they were fitted in the first place.I expected both inner bearings to be installed in the wheels when removing the wheels as is the case in the front wheels. Can anyone explain how this could happen and method in removing apart from cutting them off.
Many thanks
Aldy

Squirrels and friends in my garden.

Oops.  See if the tip of the high screw has broken off in the carb, if it has you'll be looking at a new carb for certain. Some of the after market ones are ok and much cheaper than the OEM ones.

Also if you do get them going and your customer doesn't use them much then tell him to buy and run them on ASPEN 2 or Stihl MOTOMIX. 

Oh dear! The same friend dropped in a leaf blower today and asked about his strimmer. During my explanation, I asked if anyone had looked at the machine. I learned that he had tightened up the high and low screws, and I think he over-tightened them. I can get it running, but it will not idle properly, regardless of what adjustments I make. It also revs for 15 seconds and dies 

Quote from: Mick on July 15, 2026, 02:28:29 PMSounds like you still have a carb issue to be honest.  It's usually the ones that haven't been used much that suffer worse from fuel issues.

I would usually give them a sonic clean before reassembly, but I realise not everyone has that facility to hand.  It also doesn't work every time, but That's what I would do before throwing more money at it..

Also make sure the gasket between carb and manifold is correct and the correct way around so the pulse hole isn't restricted.

Might be a daft question, and I don't want to insult you. But did you get the gaskets and diaphragms in the right order and the correct way around ?  https://www.lsengineers.co.uk/stihl-fs70-carburetor-c1m-s208-c1m-s146-california.html

Trust me Mick, I have made the mistake with the gaskets in the past  They were fitted in the correct order on this occasion.

I think I need to remove the car and try a clean. I don't have a sonic cleaner unfortunately 

No need to feel guilty.  I had loads of used parts kicking around at some point, mind you I could never find them when I needed them and ended up sourcing new ones.

It's called Sod's Law.