Question about Briggs & Stratton Garden
If I am understanding you correctly you are talking about the spindle and the hold down bolts for it. Most spindles use a 5/16 course thread 1 1/2 inches long with a 1/2 inch head size
Posted on Jan 17, 2013
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Posted on Jan 02, 2017
This is a nice mower, it has a Honda engine. The blade bolts onto a "blade brake clutch" which is why you see 3 bolts. Removing the two outer bolts should release the blade. Normally these bolts are about 1/4" to 5/16" diameter at the threads, and have split washers to prevent them from accidentally coming loose from vibration or impact.
Here's the steps I use when replacing the blade:
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Posted on Apr 04, 2009
Sounds like you lost the drive key out of the crankshaft, it's usually half-moon shaped and keeps the blade hub and the crankshaft turning together, the bolt just holds it all on the end of the crankshaft.
Hope this helps!
Posted on Jul 04, 2009
SOURCE: Cant remove blade on lawn mower
Follow directions. See if this works;
Warning! Switch off, remove the isolator
key, battery and grassbox before adjusting
Always wear gardening gloves when handling
or working near the sharp blades.
Turn the machine on its right side and inspect
the blade; if blunt or damaged, replace.
Use the following procedure to remove and replace
Insert a screwdriver into hole 26 to lock the
drive. Hold the blade 30 using gardening gloves
(not provided) and use a spanner (not provided)
to remove the blade bolt 29, blade washer 28
and blade 30.
Fit the blade 30, blade washer 28 and the blade
bolt 29. Ensure that the blade is the correct way
up (so that this symbol can be seen located
as in figure I) and tighten the bolt 29 firmly.
Ensure the screwdriver is removed before attempting
to turn the machine on.
If this procedure does not work then try the following;
It is not uncommon for the blade bolt to become seized onto the shaft due to all the gunk and moisture on the underside of the deck. Try to soak the bolt several times over with penetrating oil ( WD 40, PB Blaster, etc). Spray the bolt head, the top of the blade where it contacts the shaft, etc. Do this several times and let the penetrating oil soak in. Hit the bolt head gently several times with a hammer to loosen up the corrosion. Then try to remove the bolt per directions.
Hope this helps, if so Please rate, Thanks, and Good Luck!
Posted on Aug 02, 2009
Hi and welcome to FixYa. I am Kelly,
It appears your model number is 74370 There are 3 bolts one for each blade and the part number is 26-0671 or 260671 for the blade mount.
Part look up:
then enter part number 260671 $6.31 ea.
You can not use just any bolt for this. They are hardened bolts with an NF thread. If you use a non hardened bolt the blade will fly off when the bolt shears.
This bolt is available at most all Lawn Mower Parts Supply sources. Toro uses the same bolt on most all of their mowers.
If you do not have a Lawnmower Parts Supply near by, you might be able to go to an Autoparts supply source with yet one of the other blade bolts in hand and have them match the markings on the bolt head with yours so that you have the exact replacement bolt.
Any other parts for your mower can be found here:
Use the Search model window. each line below is a drop down window
74370 <- there are numerous models up to 74704
enter your model number if different.
Thanks for using FixYa.
Posted on Apr 27, 2010
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