Mower deck 1995 Yardman 400 series Deck issues and manuals

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disco2hse

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Hi, Newbie here

I just bought a fairly tired 1995 Yardman 400 series lawn tractor mower. It is going to need some work but hopefully not too much.

Can anyone please direct me towards an owners/operating and/or workshop manual? I have the parts manual and I have found the right engine manual from Briggs and Stratton but MTD don't go back that far.

Also, there are issues with the deck. It is hanging too low so that the pulley brake disks do not contact the brake blocks when the lift lever is set to lock the blades (see the photo attached). How do I raise deck to the correct height?

I need to replace the link link assemblies because they are all almost cut through. I have already replaced the brake blocks.

Alan

MTD Yardman 38" lawn tractor
Model Number: 136N472F643
Manufacturing Code: 2L195I1-0067
 

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bertsmobile1

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Try "K&T Parts House Lawn Mower Parts and Chain Saw & Trimmer Parts" the book you are looking for is book 3 but you might like to download a few more as they are free.

Check you deck against the parts book, looks like some linkages might be missing.
Should be 2 sets of vertical links.
Most likely it will just be wear in the links & pins.
I am forever welding up flogged out holes & rods.
Easy with gas . PIA with arc.
 
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disco2hse

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Hi,

Thanks for that. I did get those books from MTD. I never realised there are all these parts places around for mowers.

I wondered if there were bits missing but looking at the parts lists, they are complete. There are two holes in the deck pivot lifting assembly (the elbow that lifts the deck).

I would be surprised if the millimetres cut into the linkages would be enough to drop the deck so low. I am wondering if the wrong deck lift link assemblies were fitted in the past. Do you know if they come in differing lengths?
 
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bertsmobile1

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Before we start,
is this your deck ?
Yardman 135N604F401 (1995) Parts Diagrams for Deck Lift & Hanger Assembly

AFAIK there are only 2 versions of this deck
One with a single belt from the engine to the deck spindles
Another much wider deck with an intermediate belt from the engine to a double pulley on the deck.

However my exposure to MTD products is quite limited as we only got a few selected models imported down here.
The "F" in the model number designates the deck fitted. ( 38" 2 blade side discharge )
All I have seen down here are A , C, D , E , G & P decks
 
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disco2hse

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Hi,

The deck looks like mine but the hangers are quite different. I have attached the parts list sent to me by the NZ agents.

Mine is 38", two blades and side discharge, and yes there is one belt that drives both blades from the motor.
 

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bertsmobile1

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Looks like a cheaper version of a basically poor design.
From your diagram you adjust rod 18 at the pin 19 by turning the nut 20.
Because of the leverage effect, a small adjustment there will make a big difference to the overall height.
Similarly a small amount of wear will also make a big difference to the height
Same goes for rod 31 and the two plates it locates through.
Ditto for the holes in the deck hanger rails parts 36 & 41
These rails are held in by 4 bolts on each side through the foot boards which rarely come loose but they will also have a drastic effect on the deck height.
 
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disco2hse

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bertsmobile1 said:
Looks like a cheaper version of a basically poor design.
From your diagram you adjust rod 18 at the pin 19 by turning the nut 20.
Because of the leverage effect, a small adjustment there will make a big difference to the overall height.
Similarly a small amount of wear will also make a big difference to the height
Same goes for rod 31 and the two plates it locates through.
Ditto for the holes in the deck hanger rails parts 36 & 41
These rails are held in by 4 bolts on each side through the foot boards which rarely come loose but they will also have a drastic effect on the deck height.
Click to expand...

OK. That gives me something to work on. :thumbsup:

I have ordered new hangers and adjusters as the existing ones are nearly cut right through.
 
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disco2hse

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