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Yamaha XV750 Virago Manual

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Chapter 1 Tune-up and routine maintenance
1-9
4.5a Pull back the plastic caps (arrows)
and undo the terminal screws (negative
first, then positive)
4.5b Lift the battery out
4.5c The electrolyte level should be
between the marks on the battery case
4.8 Check the specific gravity with a hydrometer
5.2 The caliper on chain drive models has a pad
inspection window
illustration). Remove the battery securing strap if you haven't already
done so and pull the battery straight up to remove it (see illustration).
The electrolyte level will now be visible through the translucent battery
case - it should be between the Upper and Lower level marks (see
illustration).
6 If the electrolyte is low, remove the cell caps and fill each cell to
the upper level mark with distilled water. Note: Some models have a
long-life battery equipped with only one fiiler plug. Do not use tap water
(except in an emergency), and do not overfill. The cell holes are quite
small, so it may help to use a plastic squeeze bottle with a small spout
to add the water. If the level is within the marks on the case, additional
water is not necessary.
7 Next, check the specific gravity of the electrolyte in each cell with
a small hydrometer made especially for motorcycle batteries. These
are available from most dealer parts departments or motorcycle
accessory stores.
8 Remove the caps, draw some electrolyte from the first cell into
the hydrometer (see illustration) and note the specific gravity.
Compare the reading to the Specifications listed in this Chapter. Note:
Add 0.004 points to the reading for every 10-degrees F above 20-
degrees C (68-degrees F) - subtract 0.004 points from the reading for
every 10-degrees below 20-degrees C (68-degrees F). Return the
electrolyte to the appropriate cell and repeat the check for the
remaining cells. When the check is complete, rinse the hydrometer
thoroughly with clean water.
9 If the specific gravity of the electrolyte in each cell is as specified,
the battery is in good condition and is apparently being charged by the
machine's charging system.
10 If the spepific gravity is low, the battery is not fully charged. This
may be due to corroded battery terminals, a dirty battery case, a
malfunctioning charging system, or loose or corroded wiring
connections. On the other hand, it may be that the battery is worn out,
especially if the machine is old, or that infrequent use of the motorcycle
prevents normal charging from taking place.
11 Be sure to correct any problems and charge the battery if
necessary. Refer to Chapter 8 for additional battery maintenance and
charging procedures.
12 On models without a battery cover, secure the battery with the
strap (see illustration 4.5a). Install the battery cell caps, tightening
them securely. Reconnect the cables to the battery, attaching the
positive cable first and the negative cable last. Make sure to install the
insulating boot over the terminals.
13 Install the battery cover (if equipped) and secure it with the strap.
14 Install all components removed for access. Be very careful not to
pinch or otherwise restrict the battery vent tube, as the battery may
build up enough internal pressure during normal charging system
operation to explode.
5 Brake pads and shoes - wear check
Refer to illustrations 5.2, 5.3 and 5.6
1 The front brake pads should be checked at the recommended
intervals and replaced with new ones when worn beyond the limit
listed in this Chapter's Specifications. Always replace pads in
complete sets; if the front brake has two calipers, replace all foir
at the same time.
2 To check the front brake pads on chain drive models, flic
the inspection window on the back of the caliper (see illustration) f
the pads are worn nearly to the red line, replace them (see Chac:
… 36 …


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  • Hi am Gavin from Napier, New Zealand- Does anyone know the correct clearance between the clutch basket bush and the gearbox input shaft on my 1990 Yamaha Virago xv 750 please? Submitted on 12-12-2021 at 00:03

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