2 - | Steering

1 | Screw

2 | Top yoke

3 | Screw

4 | Lower clamp

5 | Bearing

6 | Bearing

7 | Screw

8 | Seal

9 | Nut

10 | Spacer

11 | Washer

12 | Nut

13 | Washer

14 | Screw

15 | Bottom yoke

16 | Adjuster screw

17 | Nut

18 | Seal

19 | Rubber mounting

20 | Guide

21 | Bracket

22 | Washer

23 | Screw

Parts catalogue

Handlebar and controls

Important
Bold reference numbers in this section identify parts not shown in the figures alongside the text, but which can be found in the exploded view diagram.
Adjusting the steering head bearings
Notes
See Sect. D 4, Adjusting the steering head bearings for adjustment of steering head bearing play.
If the steering head bearings cannot be adjusted correctly, check the bearings (5) and (6) for wear and, if necessary, renew them as described in “Removal of the steering head components” in this section.
Steering angle adjustment
Loosen the nuts (17) and adjuster screws (16) on both sides of the bottom yoke.
Use a 6 to 6.5 mm spacer (A) fitted to the fork outer tube, or use a gauge.
Turn the front forks to the right until the spacer (A) is seated against the frame top tube.
Turn the adjuster screw (16) on the opposite side to bring it into contact with the stop on the steering head.
Apply threadlocker to the thread of nut (17). Hold the adjuster screw (16) firm and tighten the nut (17). Turn the forks to the opposite side: and repeat the process to adjust the other screw and tighten the relative lock nut.
On completion of the adjustment, turn the handlbars to full right lock and check that between the front brake hose and the lower trellis frame there is clearance of at least 1 mm. If not, reduce the steering angle with the right-hand adjuster screw.
Removal of the steering head components

Operation | Section reference
Remove the headlight | P 4, Renewal of the headlight
Remove the handlebar | H 1, Removal of the handlebar
Remove the fork legs | G 2, Removal of the front forks

Notes
All parts fitted to the top and bottom yokes, including the wiring and control cables, can remain on the motorcycle provided they do not hinder the following operations.
Loosen the screw (3) securing the top yoke (2) to the steering stem nut (12).
Remove the top yoke (2).
With the service tool no. 88713.1058 loosen the nut (12) and unscrew it from the steering stem.
Slide the oil seal (8), the inner race (A) and the ball race (B) of the upper bearing (5) off the steering stem.
Remove the bottom yoke (15) complete with the steering stem from the frame tube.
Remove the ball race (B) of the lower bearing (6).
The inner race (A) of the lower bearing (6) and the relative oil seal (18) will remain on the steering stem.
Using a universal puller (see figure) remove the inner race (A) and the spacer (13) from the steering stem, taking care not to damage the seat.
Important
Once disturbed, the oil seals (8) and (18) and bearings (5) and (6) must not be refitted.
Using a suitable drift, remove the outer bearing races (C) from the steering head. Proceed with extreme care to avoid damaging the seats.
Disassembly of the top yoke
While counterholding the nuts (9), unscrew and remove the screws (7), washers (11) and the lower clamp (4) from the top yoke.
Unscrew the screws (23) and remove the guide (20).
Recover the washers (22) and the headlight support bracket (21).
Reassembly of the top yoke
If the spacers (10) were removed from the top yoke, lubricate with silicone spray.
Seat the spacers (10) square in the bores (D) in the top yoke, orienting them as shown in the figure.
Important
To drive in the spacers (10), use a drift that bears only on the outer ring (E) while applying a counterforce on zone (F) on the underside of the top yoke.
On completion of the operation, clean all excess lubricant from the components.
Fit the rubber mountings (19) on the headlight support brackets (21).
Fit the headlight support brackets (21), the guide (20) and the washers (22) with the screws (23).
Tighten the screws (23) to the specified torque (Sect. C 3, Frame torque settings).
Locate the lower clamp (4) on the top yoke.
Fit the screws (7) complete with the washers (11) in the lower clamp (4).
Tighten the screws (7) to the specified torque (Sect. C 3, Frame torque settings) while counterholding the nuts (9).
Refitting the steering head components
Important
The steering head bearings (5) and (6) are identical but in no case may their components be swapped around during reassembly.
Clean all contact surfaces and lubricate with the recommended grease.
To fit the outer races (C) of the bearings (5) and (6) to the steering head, use the service tool no. 88713.1062 and proceed as follows:
heat the steering head to 150 °C;
fit the outer races (C) in their seats on the steering head;
fit the fixed bush (G, with threaded hole) of the tool into the lower race;
fit the other movable bush (H) into the upper end of the tool and drive it fully home against the upper bearing race;
tighten the nut (L) and use a wrench to seat the outer races (C) fully in the steering head;
leave the tool assembled until the steering head has cooled down to ensure that bearings are properly seated.
Insert the washer (13), oil seal (18) (with the rim facing upwards) and inner race (A) of bottom bearing (6) onto the steering stem after heating it for about 10 minutes to 120 °C.
Fit tool no. 88713.1072 into the steering stem. Keep the inner race (A) pressed against the dust seal (18) by hand for at least 15 seconds.
Lubricate the inner bearing race (A) with the recommended grease.
Fit the ball race (B) on the stem with the smaller diameter of the cage facing upwards and grease the ball race.
Insert the steering stem in steering head and push it in until it is axially seated.
Fit the bottom yoke assembly to frame.
Grease the ball race (B) and fit it to frame top outer race (C).
Fit the inner race (A) of the upper bearing (5) to the steering head, with the larger diameter side of the race facing upwards.
Install the dust seal (8) with the flat side facing upwards.
Grease the nut (12).
Tighten the steering stem nut (12) by hand until it seats against the oil seal (8).
Fit service bush no. 88713.1058 to the steering stem nut (12) and fit the torque wrench to the bush.
Tighten the steering stem nut (12) to the specified torque (Sect. C 3, Frame torque settings).
Fit the top yoke (2) on the steering stem nut (12), aligning the fork leg bores with the corresponding bores on the bottom yoke. Relocate the fork legs as described in Sect. G 2, Refitting the front forks.
Grease the screw (3).
Tighten the screw (3) on the top yoke to the specified torque (Sect. C 3, Frame torque settings).

Operation | Section reference
Refit the fork legs | G 2, Refitting the front forks
Refit the handlebar | H 1, Refitting the handlebar
Refit the headlight | P 4, Renewal of the headlight

H