Preparing the Mower. Repair all bent or damaged areas of the mower deck and replace any missing or damaged parts. Removing the Existing Blades. Lift the machine so that you can access the bottom of the mower deck. Drilling the Mower Deck. Installing the Baffles. Installing the Kicker Fittings. Installing the Recycler Blades.
Parts needed for this procedure: Recycler blades sold separately 2 Warning. A blade is sharp. Contact with a sharp blade can cause serious personal injury. Wear gloves or wrap sharp edges of the blade with a rag. Removing the Kicker Fittings. Removing the Baffles. Selecting the Proper Height of Cut. Mowing in Extreme Conditions.
Mowing at Proper Intervals. Mowing with Sharp Blades. Cleaning the Mower Deck. Please read the following safety information and scroll down to close. So the fresh air through the fan cover effectively cools down the engine. The new carburetor 61B is equipped with a thermo-insulator and in-flight needle control valve as standard accessories. Its fuel route is refined to correspond to high power. Double O-ringed main needle and O-ringed carburetor rotor prevent air leakage and engine power fluctuation.
This new system secures stable and precise carburetor adjustment. Compression prOsaure: kPa 9. SET N0. Front 3. Loosen the lock nut "nd tum the adjusting screw to set the proper clearance. Hold the adjusting screw in position and tighten the lock nut..
Tha fAster g3ugo 1 should slide with a very slight drag. WARM L. See distributor assembly in Ignition System 4. If necessary, loosen the distributor bolt and turn the distributor to align the marks. ON T:M!
HINT: If the cylinder head is difficult to lift off, pry betwee;, the cylinder head and block with a screw- driver. SST , Clean valve guide bushings l t ' ' Using a valve guide bushing brush. Clean cylinder head Using a soft brush and sclvent, thoroughly clean the cylinder head. Maximum warpage: Cylinder block side: 0.
Manifold side: 0. If warpage is greater than maximum, replace the cylin- der head. If cracked, replace the cylinder head. Bushing inside diameter: 8. V6lve stem diameter: '. Intake 7. Exhaust 7. USt O. OT9 - 0. Meximum 0. If the clearance iE greater than maximum, r13plactl ln9 valve and guide bushing. Using a chisel and hammer, break the valve guide bushings. Both intake and exhaust If the bushing bore diameter of the cylinder head is Bushing bore diameter greater than Bushing size bushing bore to these dimension: Use STD.
S 0. Valva face angle: Exhaust: 1. Minimum margin thickness: Intake: 0. Exhaust: 0. If the margin thicknar. Minimum If the overall length is less than minimum, replace the valve. Remove only enough metal to' clean the seats.
Checl the valve seating position. Apply a light coat of prussian blue or white lead to the valve face. Do not rptate valve. If not, replace the valve. If not, resurface the saat. Exhaust 1. If not. Maximum squareness: -. If the deviation is greater than maximum, replace the valve spring. If the free length is not as specified.
EM Correct or replace if necessary. Little or no movement should be possible. If movement is felt. HINT: Arrange th6 rocker arms and rocker supports in correct order. If the valve contacting surface of the rocker arm is I I I worn. Rocker shaft diameter: Standard oil clearance: 0. Maximum oil clearance: 0. If the clearance exceeds maximum. Maximum circle runout:. Maximum warpage: 0. If warpage is greater than maximum, correct or re- place the manifolds.
SST Place cyiincler head on cylinder block a Place a new cylinder head gasket in position on the cylinder block. Torque: Torque: 19 N-m 1 95 kgf-crn. Torque: 2 N-m 25 kgf-cm, 18 in. SST 0 ,. SST 0 0 , o. Minimum slack: At 98 N 1 0 kgf, 22 lbf tanslon: G31 ln. If the sla. SST , 0, , 0 , 0, Maximum o:hain Glongatlom. If the elongation is greater than meximum, replace tho chain. HINT: Make the same measurements pulling at 3 or more places selected at random.
Camshaft: Minimum thickness: Chain tensinner: Vibration damper: 4. If the diameter is less than minimum. Inspect camshaft for runout a Place the camshaft on V- blocks. Maximum circle runout: 0. If the circle run out is greater than maxirnurr:.
Inspect cam lobes Using a micrometer, measure' the cam lobe height. Exhaust: Minimum cam lobe height: Intake: If the cam lobe height is greater than minimum, re- EM place the camshaft. Inspect camshaft journals a Using a micrometer, measure the journal diameter. Journal diameter from front side : STD No. STD No. UfS 0. If the journa! Thrust clearance: STD: 0. MS dmum: 0. If timing chain cover is removed from cylinder block: a Using a screwdriver, pry out the oil seal. Jrface is flush with the timing chain co.
Tape ihe. Torque: 8 N-m 80 kgf-cm, 69 ln. HINT: Align the timing chain and camshaft sprocket timing marks. HINT: Align the timing chain and crankshaft sprocket timing r. SST , Torque: 88 N-m kgf. C in. Maximum thrust clearance:. If nocessa;y, re- place the crankshaft. I c Using the 2 removed connecting rod bolts, remove the connecting rod cap and lower bearing by wiggling the connecting rod cap right and left.
HINT: Keep the lower bearing inserted with the. If the crank pin or bearing is damaged, replace the bearings. If nece:;sary, grind or replace the crankshaft.. Standard oil c!
If the oil'. If necessary, grind or replace the crank- shaft. STD Mark 2 1. STD Mork 3 1. Ul Completely remove the Plastigage. Standard thruat clearance: 0. MGxlmum thrust clearance: 0. If the thrust clearance is greater than maximum, re- plaol' tha thrust washers as a sat. Thruot washer thlckne.. OU57 - 0. HINT: Keep the upper bearing and upper thrust wash- ers together with the cylinder block. If the journal or bearing is damaged, replace the bear- ings, If necessary, grind or repiace the crankshaft.
Plastigage g Lay a strip of Plastigage across each journal. See procedure a and b above j Measure the Plastigage at its widest point. Standard clearance: STD 0. If the oil clearance is greater than maximum. If necessary. LjJ """ 0. J - 2. Mark 7 Mark 8 Crankshaft Journal diamEltor: Mark 1 Mcrk 2 Standard :oizod bearing cent'er Wfl! J 1 L:u;so. OU8l - 0. HINT: Arrange the main bearing caps, bearbgs and thrust washers in correct order.
EG Clean cylinder block Using a soft. Maximum warpago: 0. If warpage is greater than maximum, replace the cylin-. If dMp sc. If necessary, replace the cylinder block. The mark is stamped on the top of the. STD Mark 2 If the diameter is greater than maximum, rebore ""the 4 r:ylindars.
Arrange the rings in correct order only. P'Z 3. Remove the connecting rod. I STD Mark 3 If the oil clearance is greater thnn maximum. If necessary, replace the cylir der block. Ring groove clearance: No. If the clearance is greater thon m2ximum, replace the piston. End gap: Item' Standard Maximum. If the end gap is greater than maximum, even with a new piston ring, reb'ore all the 4 cylinders or replace the cylinder block.
Inspect connecting rod alignment Using a rod aligner and thickness gauge, check the connecting rod alignment. Maximum bond: I I 0. Check for twist Maximum twist: 0. If twist is greater than maximum, replace the connect- ing rod assembly. Inspect connecting rod bolts Using vernier calipers. Standard diameter: 8. Minimum diameter: 8. Diameter: Item Main journal Cranck pin If thc.
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