I recently bought a 2001 Suzuki Katana 600. It have 2900 miles on it and runs like a dream. Except for one point, when I shift the bike from nutral to first it makes this grinding nosie. I own the cluch fully depresed at this time. Also this grinding does not happen near any other gear changes, such as 1st to 2nd... This lead me to beleve one of my worst fears, it is a problem in the nouns. Do you guyes agree? and if so where can I win this part cheap? Do I hold to buy a brand new transmissison or can I return with a 1st gear repair kit? I be thinking of turing to ebay to save a couple of bucks, whould you recomend that?
Answers: Tom B give very obedient advice.
It's most possible as simple as that.
by the way,,, Do you realize that Transmission repair requires Remove engine from frame,,,and taking entire engine apart?
And that your bike doesnt hold separate "transmission oil" that can be changed/flushed,etc?
It shares the engine grease in a adjectives sump.
So,,a Engine Oil Change = a "transmission grease change"
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Put it on the center stand
Put it In Gear,,,
Pull Clutch In and hold it,,,,
While turning back pedals with your paw.
It should be very "free" to turn rudder,,,,,there's only lantern resistance from the gears.
If there's a heavy,dragging touch,,,,,
Check Clutch adjustment again.
If it wont adjust to break free&clear,,,
Look thru Oil Filler Plug on R/H engine cover,,,aka "Clutch Cover".
You can SEE/WATCH Clutch turning thru that hole as you turn back helm.
Actually,,only the INNER hub and steel plates turn.
IF the Clutch Hub slice that You'll see thru the hole remains fairly Still & Motionless,,,thats Good.
If nearby is any Distinct or extreme amount of "WOBBLE" in the clutch as ya turn the helm,,,,
That indicates Warped Plates.
Which means Clutch Will Drag defectively,,,
and that'll make it grind when going from N to 1st.
It's a small bind,but best to observe it Both when Cold And when Hot.
A Little bit of warpage get worse when Clutch is Hot.
It's Probably just need a proper clutch adjustment.
I've seen a BUNCH beside moderate/minimal warpage of the clutch plates.
Some folks never notice it,,,others do.
Depends on How/Where bike is ridden.
In traffic,,,near a lot of stop & progress & holding clutch In ,,it's worse.
Not saying that yours IS perverse,,,it may be or maybe not.
It's purely something to CHECK quick & confident if you cannot get Clutch Adjustment to break Free & Clean next to No Drag.
If all that seem fine,,,check the shifter's detent roller.
They're a common mete out of "half-way" into gear & causes the dogs to howl---which sounds approaching "grinding gears"
Your gearbox is Constant Mesh.
All Gears always meshed,,they can't truly Tooth-grind or Synchro-Crash like sports car boxes do.
Doesnt even have synchro rings surrounded by there
The roar is the engagement dogs clattering across their receiver mate when it wont slide fully into position.
Clutch Drag to a degree loads everything that slides in the trans,,,and can effect clatter.
Weak /Faulty shift detent will balk and not fully complete shift,
and can cause clatter.
Both are Easy to Check ,Cheap & smooth to fix.
Do like Jim Sez--GET A Shop Manual.
Study how the Clutch and Shifter Mechanism work,,and the Transmission
The SIMPLE things are intermittent and unpredictable.
The symptoms vary contained by how they act,,and to what amount.
A Broke Gearbox,,
AINT "broke sometimes,,and other times not".
It's symptoms are near purely consistent.
Good luck near it
Check or replace the fluid with the recommended stuff first. Could be a upkeep issue or water contamination.
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